25623945 has 40 divisors (see below), whose sum is σ = 46347840. Its totient is φ = 13543200.

The previous prime is 25623937. The next prime is 25623953. The reversal of 25623945 is 54932652.

25623945 is a `hidden beast` number, since 2 + 562 + 3 + 94 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (25623937) and next prime (25623953).

It is not a de Polignac number, because 25623945 - 2³ = 25623937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 60946 + ... + 61364.

It is an arithmetic number, because the mean of its divisors is an integer number (1158696).

Almost surely, 2^25623945 is an apocalyptic number.

It is an amenable number.

25623945 is a deficient number, since it is larger than the sum of its proper divisors (20723895).

25623945 is a wasteful number, since it uses less digits than its factorization.

25623945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 578 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 25623945 is about 5062.0099762841. The cubic root of 25623945 is about 294.8143809795.

The spelling of 25623945 in words is "twenty-five million, six hundred twenty-three thousand, nine hundred forty-five".