25135538 has 16 divisors (see below), whose sum is σ = 38568960. Its totient is φ = 12282000.

The previous prime is 25135529. The next prime is 25135541. The reversal of 25135538 is 83553152.

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, 21263 + ... + 22413.

It is an arithmetic number, because the mean of its divisors is an integer number (2410560).

Almost surely, 2^25135538 is an apocalyptic number.

25135538 is a deficient number, since it is larger than the sum of its proper divisors (13433422).

25135538 is a wasteful number, since it uses less digits than its factorization.

25135538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393.

The product of its digits is 18000, while the sum is 32.

The square root of 25135538 is about 5013.5354790806. The cubic root of 25135538 is about 292.9292424277.

The spelling of 25135538 in words is "twenty-five million, one hundred thirty-five thousand, five hundred thirty-eight".