15397025 has 18 divisors (see below), whose sum is σ = 22211190. Its totient is φ = 10557120.

The previous prime is 15397003. The next prime is 15397033. The reversal of 15397025 is 52079351.

15397025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 4892944 + 10504081 = 2212^2 + 3241^2 .

It is not a de Polignac number, because 15397025 - 2¹⁶ = 15331489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15396982 and 15397000.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5060 + ... + 7509.

It is an arithmetic number, because the mean of its divisors is an integer number (1233955).

Almost surely, 2^15397025 is an apocalyptic number.

It is an amenable number.

15397025 is a deficient number, since it is larger than the sum of its proper divisors (6814165).

15397025 is a wasteful number, since it uses less digits than its factorization.

15397025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12593 (or 12581 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 15397025 is about 3923.9043056629. The cubic root of 15397025 is about 248.7781716029.

The spelling of 15397025 in words is "fifteen million, three hundred ninety-seven thousand, twenty-five".