Search a number
-
+
15072625 = 531741173
BaseRepresentation
bin111001011111…
…110101110001
31001100202202101
4321133311301
512324311000
61255020401
7242054341
oct71376561
931322671
1015072625
118565317
12506a701
133179719
142004d21
1514cae6a
hexe5fd71

15072625 has 32 divisors (see below), whose sum is σ = 20520864. Its totient is φ = 11008000.

The previous prime is 15072623. The next prime is 15072641. The reversal of 15072625 is 52627051.

It can be written as a sum of positive squares in 16 ways, for example, as 9138529 + 5934096 = 3023^2 + 2436^2 .

It is not a de Polignac number, because 15072625 - 21 = 15072623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15072593 and 15072602.

It is not an unprimeable number, because it can be changed into a prime (15072623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87039 + ... + 87211.

It is an arithmetic number, because the mean of its divisors is an integer number (641277).

Almost surely, 215072625 is an apocalyptic number.

It is an amenable number.

15072625 is a deficient number, since it is larger than the sum of its proper divisors (5448239).

15072625 is a wasteful number, since it uses less digits than its factorization.

15072625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 15072625 is about 3882.3478721001. The cubic root of 15072625 is about 247.0185860229.

Adding to 15072625 its reverse (52627051), we get a palindrome (67699676).

The spelling of 15072625 in words is "fifteen million, seventy-two thousand, six hundred twenty-five".

Divisors: 1 5 17 25 41 85 125 173 205 425 697 865 1025 2125 2941 3485 4325 5125 7093 14705 17425 21625 35465 73525 87125 120581 177325 367625 602905 886625 3014525 15072625