25521532 has 12 divisors (see below), whose sum is σ = 45701656. Its totient is φ = 12463920.

The previous prime is 25521521. The next prime is 25521553. The reversal of 25521532 is 23512552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25521497 and 25521506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74019 + ... + 74362.

Almost surely, 2^25521532 is an apocalyptic number.

It is an amenable number.

25521532 is a deficient number, since it is larger than the sum of its proper divisors (20180124).

25521532 is a wasteful number, since it uses less digits than its factorization.

25521532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148428 (or 148426 counting only the distinct ones).

The product of its digits is 3000, while the sum is 25.

The square root of 25521532 is about 5051.8840050025. The cubic root of 25521532 is about 294.4210881781.

The spelling of 25521532 in words is "twenty-five million, five hundred twenty-one thousand, five hundred thirty-two".