625985420 has 12 divisors (see below), whose sum is σ = 1314569424. Its totient is φ = 250394160.

The previous prime is 625985401. The next prime is 625985429. The reversal of 625985420 is 24589526.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (625985429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15649616 + ... + 15649655.

It is an arithmetic number, because the mean of its divisors is an integer number (109547452).

Almost surely, 2^625985420 is an apocalyptic number.

It is an amenable number.

625985420 is an abundant number, since it is smaller than the sum of its proper divisors (688584004).

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

625985420 is a wasteful number, since it uses less digits than its factorization.

625985420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31299280 (or 31299278 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 625985420 is about 25019.7006376975. The cubic root of 625985420 is about 855.4370825876.

The spelling of 625985420 in words is "six hundred twenty-five million, nine hundred eighty-five thousand, four hundred twenty".