25640348 has 24 divisors (see below), whose sum is σ = 48760320. Its totient is φ = 11752560.

The previous prime is 25640339. The next prime is 25640353. The reversal of 25640348 is 84304652.

It is a super-2 number, since 2×25640348² = 1314854891122208, which contains 22 as substring.

It is a congruent number.

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, 3086 + ... + 7797.

It is an arithmetic number, because the mean of its divisors is an integer number (2031680).

Almost surely, 2^25640348 is an apocalyptic number.

It is an amenable number.

25640348 is a deficient number, since it is larger than the sum of its proper divisors (23119972).

25640348 is a wasteful number, since it uses less digits than its factorization.

25640348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10937 (or 10935 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 25640348 is about 5063.6299232863. The cubic root of 25640348 is about 294.8772753905.

It can be divided in two parts, 256 and 40348, that added together give a palindrome (40604).

The spelling of 25640348 in words is "twenty-five million, six hundred forty thousand, three hundred forty-eight".