25512530 has 16 divisors (see below), whose sum is σ = 46128960. Its totient is φ = 10159152.

The previous prime is 25512523. The next prime is 25512559. The reversal of 25512530 is 3521552.

It is a junction number, because it is equal to n+sod(n) for n = 25512496 and 25512505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3350 + ... + 7889.

It is an arithmetic number, because the mean of its divisors is an integer number (2883060).

Almost surely, 2^25512530 is an apocalyptic number.

25512530 is a deficient number, since it is larger than the sum of its proper divisors (20616430).

25512530 is a wasteful number, since it uses less digits than its factorization.

25512530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11473.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 25512530 is about 5050.9929716839. The cubic root of 25512530 is about 294.3864678646.

The spelling of 25512530 in words is "twenty-five million, five hundred twelve thousand, five hundred thirty".