625634155 has 16 divisors (see below), whose sum is σ = 800077824. Its totient is φ = 468556000.

The previous prime is 625634137. The next prime is 625634173. The reversal of 625634155 is 551436526.

It is an interprime number because it is at equal distance from previous prime (625634137) and next prime (625634173).

It is not a de Polignac number, because 625634155 - 2¹⁵ = 625601387 is a prime.

It is a Duffinian 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, 52471 + ... + 63280.

It is an arithmetic number, because the mean of its divisors is an integer number (50004864).

Almost surely, 2^625634155 is an apocalyptic number.

625634155 is a deficient number, since it is larger than the sum of its proper divisors (174443669).

625634155 is a wasteful number, since it uses less digits than its factorization.

625634155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115826.

The product of its digits is 108000, while the sum is 37.

The square root of 625634155 is about 25012.6798844106. The cubic root of 625634155 is about 855.2770462037.

The spelling of 625634155 in words is "six hundred twenty-five million, six hundred thirty-four thousand, one hundred fifty-five".