25312828 has 6 divisors (see below), whose sum is σ = 44297456. Its totient is φ = 12656412.

The previous prime is 25312817. The next prime is 25312831. The reversal of 25312828 is 82821352.

It is a super-2 number, since 2×25312828² = 1281478522715168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25312828.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3164100 + ... + 3164107.

Almost surely, 2^25312828 is an apocalyptic number.

It is an amenable number.

25312828 is a deficient number, since it is larger than the sum of its proper divisors (18984628).

25312828 is a wasteful number, since it uses less digits than its factorization.

25312828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6328211 (or 6328209 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 25312828 is about 5031.1855461710. The cubic root of 25312828 is about 293.6163413060.

The spelling of 25312828 in words is "twenty-five million, three hundred twelve thousand, eight hundred twenty-eight".