25725297 has 32 divisors (see below), whose sum is σ = 39312000. Its totient is φ = 14833152.

The previous prime is 25725289. The next prime is 25725307. The reversal of 25725297 is 79252752.

It is not a de Polignac number, because 25725297 - 2³ = 25725289 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (25725197) 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, 110293 + ... + 110525.

It is an arithmetic number, because the mean of its divisors is an integer number (1228500).

Almost surely, 2^25725297 is an apocalyptic number.

It is an amenable number.

25725297 is a deficient number, since it is larger than the sum of its proper divisors (13586703).

25725297 is a wasteful number, since it uses less digits than its factorization.

25725297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417.

The product of its digits is 88200, while the sum is 39.

The square root of 25725297 is about 5072.0111395777. The cubic root of 25725297 is about 295.2025689034.

The spelling of 25725297 in words is "twenty-five million, seven hundred twenty-five thousand, two hundred ninety-seven".