25488631 has 4 divisors (see below), whose sum is σ = 29129872. Its totient is φ = 21847392.

The previous prime is 25488629. The next prime is 25488647. The reversal of 25488631 is 13688452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25488631 - 2¹ = 25488629 is a prime.

It is a super-2 number, since 2×25488631² = 1299340620508322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25488611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1820610 + ... + 1820623.

It is an arithmetic number, because the mean of its divisors is an integer number (7282468).

Almost surely, 2^25488631 is an apocalyptic number.

25488631 is a deficient number, since it is larger than the sum of its proper divisors (3641241).

25488631 is an equidigital number, since it uses as much as digits as its factorization.

25488631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641240.

The product of its digits is 46080, while the sum is 37.

The square root of 25488631 is about 5048.6266449402. The cubic root of 25488631 is about 294.2945164431.

The spelling of 25488631 in words is "twenty-five million, four hundred eighty-eight thousand, six hundred thirty-one".