625889855 has 8 divisors (see below), whose sum is σ = 755218464. Its totient is φ = 497944800.

The previous prime is 625889851. The next prime is 625889857. The reversal of 625889855 is 558988526.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 625889855 - 2² = 625889851 is a prime.

It is a super-2 number, since 2×625889855² = 783476221183842050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 625889855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625889851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344891 + ... + 346700.

It is an arithmetic number, because the mean of its divisors is an integer number (94402308).

Almost surely, 2^625889855 is an apocalyptic number.

625889855 is a deficient number, since it is larger than the sum of its proper divisors (129328609).

625889855 is a wasteful number, since it uses less digits than its factorization.

625889855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691777.

The product of its digits is 6912000, while the sum is 56.

The square root of 625889855 is about 25017.7907697702. The cubic root of 625889855 is about 855.3935490896.

The spelling of 625889855 in words is "six hundred twenty-five million, eight hundred eighty-nine thousand, eight hundred fifty-five".