625164020 has 48 divisors (see below), whose sum is σ = 1462602960. Its totient is φ = 222867456.

The previous prime is 625164019. The next prime is 625164031. The reversal of 625164020 is 20461526.

It can be written as a sum of positive squares in 8 ways, for example, as 95335696 + 529828324 = 9764^2 + 23018^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

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, 33917 + ... + 48996.

It is an arithmetic number, because the mean of its divisors is an integer number (30470895).

Almost surely, 2^625164020 is an apocalyptic number.

It is an amenable number.

625164020 is an abundant number, since it is smaller than the sum of its proper divisors (837438940).

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

625164020 is a wasteful number, since it uses less digits than its factorization.

625164020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82964 (or 82962 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 625164020 is about 25003.2801848078. The cubic root of 625164020 is about 855.0627588646.

The spelling of 625164020 in words is "six hundred twenty-five million, one hundred sixty-four thousand, twenty".