25908897 has 24 divisors (see below), whose sum is σ = 40381536. Its totient is φ = 14732928.

The previous prime is 25908871. The next prime is 25908907. The reversal of 25908897 is 79880952.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-25908897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25908497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49278 + ... + 49800.

It is an arithmetic number, because the mean of its divisors is an integer number (1682564).

Almost surely, 2^25908897 is an apocalyptic number.

It is an amenable number.

25908897 is a deficient number, since it is larger than the sum of its proper divisors (14472639).

25908897 is a wasteful number, since it uses less digits than its factorization.

25908897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 25908897 is about 5090.0782901641. The cubic root of 25908897 is about 295.9031861675.

The spelling of 25908897 in words is "twenty-five million, nine hundred eight thousand, eight hundred ninety-seven".