625562780 has 12 divisors (see below), whose sum is σ = 1313681880. Its totient is φ = 250225104.

The previous prime is 625562779. The next prime is 625562813. The reversal of 625562780 is 87265526.

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 a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 15639050 + ... + 15639089.

It is an arithmetic number, because the mean of its divisors is an integer number (109473490).

Almost surely, 2^625562780 is an apocalyptic number.

It is an amenable number.

625562780 is an abundant number, since it is smaller than the sum of its proper divisors (688119100).

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

625562780 is a wasteful number, since it uses less digits than its factorization.

625562780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31278148 (or 31278146 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 625562780 is about 25011.2530673695. The cubic root of 625562780 is about 855.2445204215.

The spelling of 625562780 in words is "six hundred twenty-five million, five hundred sixty-two thousand, seven hundred eighty".