25488813 has 16 divisors (see below), whose sum is σ = 39574656. Its totient is φ = 14289600.

The previous prime is 25488803. The next prime is 25488833. The reversal of 25488813 is 31888452.

It is not a de Polignac number, because 25488813 - 2⁵ = 25488781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25488803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10338 + ... + 12563.

It is an arithmetic number, because the mean of its divisors is an integer number (2473416).

Almost surely, 2^25488813 is an apocalyptic number.

It is an amenable number.

25488813 is a deficient number, since it is larger than the sum of its proper divisors (14085843).

25488813 is a wasteful number, since it uses less digits than its factorization.

25488813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22964.

The product of its digits is 61440, while the sum is 39.

The square root of 25488813 is about 5048.6446696118. The cubic root of 25488813 is about 294.2952169054.

The spelling of 25488813 in words is "twenty-five million, four hundred eighty-eight thousand, eight hundred thirteen".