625152640 has 128 divisors (see below), whose sum is σ = 1744934400. Its totient is φ = 209707008.

The previous prime is 625152637. The next prime is 625152653. The reversal of 625152640 is 46251526.

It is a tau number, because it is divible by the number of its divisors (128).

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, 209076 + ... + 212044.

It is an arithmetic number, because the mean of its divisors is an integer number (13632300).

Almost surely, 2^625152640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625152640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (872467200).

625152640 is an abundant number, since it is smaller than the sum of its proper divisors (1119781760).

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

625152640 is a wasteful number, since it uses less digits than its factorization.

625152640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042 (or 3030 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 625152640 is about 25003.0526136310. The cubic root of 625152640 is about 855.0575705338.

The spelling of 625152640 in words is "six hundred twenty-five million, one hundred fifty-two thousand, six hundred forty".