625289420 has 48 divisors (see below), whose sum is σ = 1502178048. Its totient is φ = 214173120.

The previous prime is 625289417. The next prime is 625289471. The reversal of 625289420 is 24982526.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218519 + ... + 221361.

It is an arithmetic number, because the mean of its divisors is an integer number (31295376).

Almost surely, 2^625289420 is an apocalyptic number.

It is an amenable number.

625289420 is an abundant number, since it is smaller than the sum of its proper divisors (876888628).

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

625289420 is a wasteful number, since it uses less digits than its factorization.

625289420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4430 (or 4428 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 625289420 is about 25005.7877300436. The cubic root of 625289420 is about 855.1199266361.

The spelling of 625289420 in words is "six hundred twenty-five million, two hundred eighty-nine thousand, four hundred twenty".