Search a number
-
+
25195050 = 234526221
BaseRepresentation
bin110000000011…
…1001000101010
31202102001010000
41200013020222
522422220200
62300003430
7424103646
oct140071052
952361100
1025195050
1113249461
128530576
1352b1c1a
1434bbc26
15232a300
hex180722a

25195050 has 60 divisors (see below), whose sum is σ = 70016166. Its totient is φ = 6717600.

The previous prime is 25194977. The next prime is 25195057. The reversal of 25195050 is 5059152.

It can be written as a sum of positive squares in 3 ways, for example, as 11512449 + 13682601 = 3393^2 + 3699^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25195057) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 940 + ... + 7160.

Almost surely, 225195050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25195050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35008083).

25195050 is an abundant number, since it is smaller than the sum of its proper divisors (44821116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25195050 is a wasteful number, since it uses less digits than its factorization.

25195050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6245 (or 6231 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 25195050 is about 5019.4671031893. The cubic root of 25195050 is about 293.1602442456.

It can be divided in two parts, 2519 and 5050, that added together give a square (7569 = 872).

The spelling of 25195050 in words is "twenty-five million, one hundred ninety-five thousand, fifty".

Divisors: 1 2 3 5 6 9 10 15 18 25 27 30 45 50 54 75 81 90 135 150 162 225 270 405 450 675 810 1350 2025 4050 6221 12442 18663 31105 37326 55989 62210 93315 111978 155525 167967 186630 279945 311050 335934 466575 503901 559890 839835 933150 1007802 1399725 1679670 2519505 2799450 4199175 5039010 8398350 12597525 25195050