625554073 has 2 divisors, whose sum is σ = 625554074. Its totient is φ = 625554072.

The previous prime is 625554029. The next prime is 625554113. The reversal of 625554073 is 370455526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 561121344 + 64432729 = 23688^2 + 8027^2 .

It is a cyclic number.

It is not a de Polignac number, because 625554073 - 2²⁵ = 591999641 is a prime.

It is not a weakly prime, because it can be changed into another prime (625554373) 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 as a sum of consecutive naturals, namely, 312777036 + 312777037.

It is an arithmetic number, because the mean of its divisors is an integer number (312777037).

Almost surely, 2^625554073 is an apocalyptic number.

It is an amenable number.

625554073 is a deficient number, since it is larger than the sum of its proper divisors (1).

625554073 is an equidigital number, since it uses as much as digits as its factorization.

625554073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 625554073 is about 25011.0790051129. The cubic root of 625554073 is about 855.2405524486.

The spelling of 625554073 in words is "six hundred twenty-five million, five hundred fifty-four thousand, seventy-three".