625222644 has 12 divisors (see below), whose sum is σ = 1458852864. Its totient is φ = 208407544.

The previous prime is 625222613. The next prime is 625222667. The reversal of 625222644 is 446222526.

It is a tau number, because it is divible by the number of its divisors (12).

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, 26050932 + ... + 26050955.

It is an arithmetic number, because the mean of its divisors is an integer number (121571072).

Almost surely, 2^625222644 is an apocalyptic number.

It is an amenable number.

625222644 is an abundant number, since it is smaller than the sum of its proper divisors (833630220).

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

625222644 is a wasteful number, since it uses less digits than its factorization.

625222644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52101894 (or 52101892 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

The square root of 625222644 is about 25004.4524835078. The cubic root of 625222644 is about 855.0894855213.

The spelling of 625222644 in words is "six hundred twenty-five million, two hundred twenty-two thousand, six hundred forty-four".