25525538 has 16 divisors (see below), whose sum is σ = 40067136. Its totient is φ = 12173040.

The previous prime is 25525529. The next prime is 25525541. The reversal of 25525538 is 83552552.

It is a junction number, because it is equal to n+sod(n) for n = 25525498 and 25525507.

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, 23528 + ... + 24588.

It is an arithmetic number, because the mean of its divisors is an integer number (2504196).

Almost surely, 2^25525538 is an apocalyptic number.

25525538 is a deficient number, since it is larger than the sum of its proper divisors (14541598).

25525538 is a wasteful number, since it uses less digits than its factorization.

25525538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609.

The product of its digits is 60000, while the sum is 35.

The square root of 25525538 is about 5052.2804751914. The cubic root of 25525538 is about 294.4364920231.

The spelling of 25525538 in words is "twenty-five million, five hundred twenty-five thousand, five hundred thirty-eight".