625824642 has 16 divisors (see below), whose sum is σ = 1251936000. Its totient is φ = 208560432.

The previous prime is 625824581. The next prime is 625824643. The reversal of 625824642 is 246428526.

It is a self number, because there is not a number n which added to its sum of digits gives 625824642.

It is not an unprimeable number, because it can be changed into a prime (625824643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25423 + ... + 43565.

It is an arithmetic number, because the mean of its divisors is an integer number (78246000).

Almost surely, 2^625824642 is an apocalyptic number.

625824642 is an abundant number, since it is smaller than the sum of its proper divisors (626111358).

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

625824642 is a wasteful number, since it uses less digits than its factorization.

625824642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23897.

The product of its digits is 184320, while the sum is 39.

The square root of 625824642 is about 25016.4874033106. The cubic root of 625824642 is about 855.3638395400.

The spelling of 625824642 in words is "six hundred twenty-five million, eight hundred twenty-four thousand, six hundred forty-two".