625590055 has 16 divisors (see below), whose sum is σ = 806738400. Its totient is φ = 463997952.

The previous prime is 625590037. The next prime is 625590073. The reversal of 625590055 is 550095526.

It is an interprime number because it is at equal distance from previous prime (625590037) and next prime (625590073).

It is a cyclic number.

It is not a de Polignac number, because 625590055 - 2⁵ = 625590023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 625589996 and 625590023.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49230 + ... + 60619.

It is an arithmetic number, because the mean of its divisors is an integer number (50421150).

Almost surely, 2^625590055 is an apocalyptic number.

625590055 is a deficient number, since it is larger than the sum of its proper divisors (181148345).

625590055 is a wasteful number, since it uses less digits than its factorization.

625590055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109938.

The product of its (nonzero) digits is 67500, while the sum is 37.

The square root of 625590055 is about 25011.7983159948. The cubic root of 625590055 is about 855.2569500055.

The spelling of 625590055 in words is "six hundred twenty-five million, five hundred ninety thousand, fifty-five".