25455525 has 24 divisors (see below), whose sum is σ = 42330624. Its totient is φ = 13497600.

The previous prime is 25455517. The next prime is 25455571. The reversal of 25455525 is 52555452.

It is not a de Polignac number, because 25455525 - 2³ = 25455517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13437 + ... + 15213.

It is an arithmetic number, because the mean of its divisors is an integer number (1763776).

Almost surely, 2^25455525 is an apocalyptic number.

25455525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25455525 is a deficient number, since it is larger than the sum of its proper divisors (16875099).

25455525 is a wasteful number, since it uses less digits than its factorization.

25455525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981 (or 1976 counting only the distinct ones).

The product of its digits is 50000, while the sum is 33.

The square root of 25455525 is about 5045.3468661728. The cubic root of 25455525 is about 294.1670460752.

The spelling of 25455525 in words is "twenty-five million, four hundred fifty-five thousand, five hundred twenty-five".