25518532 has 12 divisors (see below), whose sum is σ = 48092716. Its totient is φ = 11777760.

The previous prime is 25518529. The next prime is 25518533. The reversal of 25518532 is 23581552.

It can be written as a sum of positive squares in 2 ways, for example, as 13366336 + 12152196 = 3656^2 + 3486^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25518494 and 25518503.

It is not an unprimeable number, because it can be changed into a prime (25518533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245319 + ... + 245422.

Almost surely, 2^25518532 is an apocalyptic number.

It is an amenable number.

25518532 is a deficient number, since it is larger than the sum of its proper divisors (22574184).

25518532 is a wasteful number, since it uses less digits than its factorization.

25518532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490758 (or 490756 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 25518532 is about 5051.5870773451. The cubic root of 25518532 is about 294.4095515421.

The spelling of 25518532 in words is "twenty-five million, five hundred eighteen thousand, five hundred thirty-two".