20258250 has 32 divisors (see below), whose sum is σ = 50566464. Its totient is φ = 5402000.

The previous prime is 20258213. The next prime is 20258261. The reversal of 20258250 is 5285202.

It is a self number, because there is not a number n which added to its sum of digits gives 20258250.

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 15 ways as a sum of consecutive naturals, for example, 12756 + ... + 14255.

It is an arithmetic number, because the mean of its divisors is an integer number (1580202).

Almost surely, 2^20258250 is an apocalyptic number.

20258250 is an abundant number, since it is smaller than the sum of its proper divisors (30308214).

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

20258250 is a wasteful number, since it uses less digits than its factorization.

20258250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27031 (or 27021 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 20258250 is about 4500.9165733215. The cubic root of 20258250 is about 272.6050993187.

The spelling of 20258250 in words is "twenty million, two hundred fifty-eight thousand, two hundred fifty".