25432564 has 24 divisors (see below), whose sum is σ = 47159840. Its totient is φ = 11967264.

The previous prime is 25432559. The next prime is 25432567. The reversal of 25432564 is 46523452.

It is a super-2 number, since 2×25432564² = 1293630623228192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25432567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11362 + ... + 13414.

Almost surely, 2^25432564 is an apocalyptic number.

It is an amenable number.

25432564 is a deficient number, since it is larger than the sum of its proper divisors (21727276).

25432564 is a wasteful number, since it uses less digits than its factorization.

25432564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239 (or 2237 counting only the distinct ones).

The product of its digits is 28800, while the sum is 31.

The square root of 25432564 is about 5043.0708898448. The cubic root of 25432564 is about 294.0785727950.

The spelling of 25432564 in words is "twenty-five million, four hundred thirty-two thousand, five hundred sixty-four".