Search a number
-
+
25242460 = 2251578039
BaseRepresentation
bin110000001001…
…0101101011100
31202111110010221
41200102231130
522430224320
62301011124
7424362115
oct140225534
952443127
1025242460
1113281041
128553aa4
1352ca689
1434d120c
1523393aa
hex1812b5c

25242460 has 24 divisors (see below), whose sum is σ = 53353440. Its totient is φ = 10031424.

The previous prime is 25242449. The next prime is 25242479. The reversal of 25242460 is 6424252.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880 + ... + 7159.

It is an arithmetic number, because the mean of its divisors is an integer number (2223060).

Almost surely, 225242460 is an apocalyptic number.

25242460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25242460 is an abundant number, since it is smaller than the sum of its proper divisors (28110980).

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

25242460 is a wasteful number, since it uses less digits than its factorization.

25242460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205 (or 8203 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 25242460 is about 5024.1874965013. The cubic root of 25242460 is about 293.3440107454.

The spelling of 25242460 in words is "twenty-five million, two hundred forty-two thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 157 314 628 785 1570 3140 8039 16078 32156 40195 80390 160780 1262123 2524246 5048492 6310615 12621230 25242460