625553564 has 12 divisors (see below), whose sum is σ = 1121419488. Its totient is φ = 305148000.

The previous prime is 625553543. The next prime is 625553569. The reversal of 625553564 is 465355526.

It is a super-2 number, since 2×625553564² = 782634522866204192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625553569) 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, 1907012 + ... + 1907339.

It is an arithmetic number, because the mean of its divisors is an integer number (93451624).

Almost surely, 2^625553564 is an apocalyptic number.

It is an amenable number.

625553564 is a deficient number, since it is larger than the sum of its proper divisors (495865924).

625553564 is a wasteful number, since it uses less digits than its factorization.

625553564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814396 (or 3814394 counting only the distinct ones).

The product of its digits is 540000, while the sum is 41.

The square root of 625553564 is about 25011.0688296202. The cubic root of 625553564 is about 855.2403204848.

The spelling of 625553564 in words is "six hundred twenty-five million, five hundred fifty-three thousand, five hundred sixty-four".