625645480 has 16 divisors (see below), whose sum is σ = 1407702420. Its totient is φ = 250258176.

The previous prime is 625645459. The next prime is 625645519. The reversal of 625645480 is 84546526.

It can be written as a sum of positive squares in 2 ways, for example, as 502746084 + 122899396 = 22422^2 + 11086^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 15641137 = 625645480 / (6 + 2 + 5 + 6 + 4 + 5 + 4 + 8 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7820529 + ... + 7820608.

Almost surely, 2^625645480 is an apocalyptic number.

It is an amenable number.

625645480 is an abundant number, since it is smaller than the sum of its proper divisors (782056940).

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

625645480 is a wasteful number, since it uses less digits than its factorization.

625645480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15641148 (or 15641144 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 625645480 is about 25012.9062685646. The cubic root of 625645480 is about 855.2822068097.

The spelling of 625645480 in words is "six hundred twenty-five million, six hundred forty-five thousand, four hundred eighty".