625968155 has 16 divisors (see below), whose sum is σ = 761473440. Its totient is φ = 493920768.

The previous prime is 625968139. The next prime is 625968179. The reversal of 625968155 is 551869526.

It is a cyclic number.

It is not a de Polignac number, because 625968155 - 2⁴ = 625968139 is a prime.

It is a super-2 number, since 2×625968155² = 783672262148208050, which contains 22 as substring.

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, 419651 + ... + 421139.

It is an arithmetic number, because the mean of its divisors is an integer number (47592090).

Almost surely, 2^625968155 is an apocalyptic number.

625968155 is a deficient number, since it is larger than the sum of its proper divisors (135505285).

625968155 is a wasteful number, since it uses less digits than its factorization.

625968155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590.

The product of its digits is 648000, while the sum is 47.

The square root of 625968155 is about 25019.3556072094. The cubic root of 625968155 is about 855.4292180503.

The spelling of 625968155 in words is "six hundred twenty-five million, nine hundred sixty-eight thousand, one hundred fifty-five".