25634953 has 4 divisors (see below), whose sum is σ = 25874640. Its totient is φ = 25395268.

The previous prime is 25634909. The next prime is 25634977. The reversal of 25634953 is 35943652.

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 a de Polignac number, because none of the positive numbers 2^k-25634953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25634153) 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, 119683 + ... + 119896.

It is an arithmetic number, because the mean of its divisors is an integer number (6468660).

Almost surely, 2^25634953 is an apocalyptic number.

It is an amenable number.

25634953 is a deficient number, since it is larger than the sum of its proper divisors (239687).

25634953 is a wasteful number, since it uses less digits than its factorization.

25634953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239686.

The product of its digits is 97200, while the sum is 37.

The square root of 25634953 is about 5063.0971746551. The cubic root of 25634953 is about 294.8565921755.

The spelling of 25634953 in words is "twenty-five million, six hundred thirty-four thousand, nine hundred fifty-three".