25642524 has 12 divisors (see below), whose sum is σ = 59832584. Its totient is φ = 8547504.

The previous prime is 25642523. The next prime is 25642541. The reversal of 25642524 is 42524652.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 25642491 and 25642500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25642523) 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, 1068427 + ... + 1068450.

Almost surely, 2^25642524 is an apocalyptic number.

It is an amenable number.

25642524 is an abundant number, since it is smaller than the sum of its proper divisors (34190060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25642524 is a wasteful number, since it uses less digits than its factorization.

25642524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136884 (or 2136882 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 25642524 is about 5063.8447843511. The cubic root of 25642524 is about 294.8856168633.

The spelling of 25642524 in words is "twenty-five million, six hundred forty-two thousand, five hundred twenty-four".