25521452 has 12 divisors (see below), whose sum is σ = 48722856. Its totient is φ = 11600640.

The previous prime is 25521413. The next prime is 25521469. The reversal of 25521452 is 25412552.

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, 289973 + ... + 290060.

It is an arithmetic number, because the mean of its divisors is an integer number (4060238).

Almost surely, 2^25521452 is an apocalyptic number.

25521452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25521452 is a deficient number, since it is larger than the sum of its proper divisors (23201404).

25521452 is a wasteful number, since it uses less digits than its factorization.

25521452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580048 (or 580046 counting only the distinct ones).

The product of its digits is 4000, while the sum is 26.

The square root of 25521452 is about 5051.8760871581. The cubic root of 25521452 is about 294.4207805462.

Subtracting from 25521452 its reverse (25412552), we obtain a square (108900 = 330²).

It can be divided in two parts, 2552 and 1452, that added together give a palindrome (4004).

The spelling of 25521452 in words is "twenty-five million, five hundred twenty-one thousand, four hundred fifty-two".