25512897 has 4 divisors (see below), whose sum is σ = 34017200. Its totient is φ = 17008596.

The previous prime is 25512887. The next prime is 25512899. The reversal of 25512897 is 79821552.

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 not a de Polignac number, because 25512897 - 2⁴ = 25512881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25512899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4252147 + ... + 4252152.

It is an arithmetic number, because the mean of its divisors is an integer number (8504300).

Almost surely, 2^25512897 is an apocalyptic number.

It is an amenable number.

25512897 is a deficient number, since it is larger than the sum of its proper divisors (8504303).

25512897 is an equidigital number, since it uses as much as digits as its factorization.

25512897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8504302.

The product of its digits is 50400, while the sum is 39.

The square root of 25512897 is about 5051.0293010435. The cubic root of 25512897 is about 294.3878794497.

The spelling of 25512897 in words is "twenty-five million, five hundred twelve thousand, eight hundred ninety-seven".