25536897 has 8 divisors (see below), whose sum is σ = 37832480. Its totient is φ = 17024580.

The previous prime is 25536887. The next prime is 25536947. The reversal of 25536897 is 79863552.

It is a happy number.

25536897 is a `hidden beast` number, since 2 + 553 + 6 + 8 + 97 = 666.

It is not a de Polignac number, because 25536897 - 2⁴ = 25536881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25536827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472879 + ... + 472932.

It is an arithmetic number, because the mean of its divisors is an integer number (4729060).

Almost surely, 2^25536897 is an apocalyptic number.

25536897 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

25536897 is a deficient number, since it is larger than the sum of its proper divisors (12295583).

25536897 is an equidigital number, since it uses as much as digits as its factorization.

25536897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945820 (or 945814 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 25536897 is about 5053.4044959809. The cubic root of 25536897 is about 294.4801608138.

The spelling of 25536897 in words is "twenty-five million, five hundred thirty-six thousand, eight hundred ninety-seven".