25956897 has 4 divisors (see below), whose sum is σ = 34609200. Its totient is φ = 17304596.

The previous prime is 25956893. The next prime is 25956919. The reversal of 25956897 is 79865952.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25956897 - 2² = 25956893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25956893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4326147 + ... + 4326152.

It is an arithmetic number, because the mean of its divisors is an integer number (8652300).

Almost surely, 2^25956897 is an apocalyptic number.

It is an amenable number.

25956897 is a deficient number, since it is larger than the sum of its proper divisors (8652303).

25956897 is an equidigital number, since it uses as much as digits as its factorization.

25956897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8652302.

The product of its digits is 1360800, while the sum is 51.

The square root of 25956897 is about 5094.7911635316. The cubic root of 25956897 is about 296.0858079993.

The spelling of 25956897 in words is "twenty-five million, nine hundred fifty-six thousand, eight hundred ninety-seven".