25290228 has 24 divisors (see below), whose sum is σ = 59621632. Its totient is φ = 8342784.

The previous prime is 25290211. The next prime is 25290247. The reversal of 25290228 is 82209252.

It is a junction number, because it is equal to n+sod(n) for n = 25290195 and 25290204.

It is a congruent number.

It is an unprimeable number.

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, 9700 + ... + 12027.

Almost surely, 2^25290228 is an apocalyptic number.

It is an amenable number.

25290228 is an abundant number, since it is smaller than the sum of its proper divisors (34331404).

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

25290228 is a wasteful number, since it uses less digits than its factorization.

25290228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21831 (or 21829 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 25290228 is about 5028.9390531204. The cubic root of 25290228 is about 293.5289323297.

The spelling of 25290228 in words is "twenty-five million, two hundred ninety thousand, two hundred twenty-eight".