25211028 has 24 divisors (see below), whose sum is σ = 59705632. Its totient is φ = 8277984.

The previous prime is 25211027. The next prime is 25211041. The reversal of 25211028 is 82011252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25210995 and 25211013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25211027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14875 + ... + 16482.

Almost surely, 2^25211028 is an apocalyptic number.

It is an amenable number.

25211028 is an abundant number, since it is smaller than the sum of its proper divisors (34494604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25211028 is a wasteful number, since it uses less digits than its factorization.

25211028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31431 (or 31429 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 25211028 is about 5021.0584541509. The cubic root of 25211028 is about 293.2222025080. Note that the first 4 decimals are identical.

The spelling of 25211028 in words is "twenty-five million, two hundred eleven thousand, twenty-eight".