25645425 has 48 divisors (see below), whose sum is σ = 47288640. Its totient is φ = 12176640.

The previous prime is 25645397. The next prime is 25645427. The reversal of 25645425 is 52454652.

It is not a de Polignac number, because 25645425 - 2¹⁰ = 25644401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25645427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27822 + ... + 28728.

It is an arithmetic number, because the mean of its divisors is an integer number (985180).

Almost surely, 2^25645425 is an apocalyptic number.

25645425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25645425 is a deficient number, since it is larger than the sum of its proper divisors (21643215).

25645425 is a wasteful number, since it uses less digits than its factorization.

25645425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962 (or 957 counting only the distinct ones).

The product of its digits is 48000, while the sum is 33.

The square root of 25645425 is about 5064.1312186791. The cubic root of 25645425 is about 294.8967368155.

The spelling of 25645425 in words is "twenty-five million, six hundred forty-five thousand, four hundred twenty-five".