25542228 has 24 divisors (see below), whose sum is σ = 63104832. Its totient is φ = 8013184.

The previous prime is 25542217. The next prime is 25542229. The reversal of 25542228 is 82224552.

It is a super-2 number, since 2×25542228² = 1304810822407968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25542195 and 25542204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25542229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62400 + ... + 62807.

It is an arithmetic number, because the mean of its divisors is an integer number (2629368).

Almost surely, 2^25542228 is an apocalyptic number.

It is an amenable number.

25542228 is an abundant number, since it is smaller than the sum of its proper divisors (37562604).

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

25542228 is a wasteful number, since it uses less digits than its factorization.

25542228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125231 (or 125229 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

The square root of 25542228 is about 5053.9319346426. The cubic root of 25542228 is about 294.5006509633.

The spelling of 25542228 in words is "twenty-five million, five hundred forty-two thousand, two hundred twenty-eight".