625100091 has 16 divisors (see below), whose sum is σ = 1039127808. Its totient is φ = 324727200.

The previous prime is 625100033. The next prime is 625100093. The reversal of 625100091 is 190001526.

It is not a de Polignac number, because 625100091 - 2¹³ = 625091899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625100093) 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 in 15 ways as a sum of consecutive naturals, for example, 1352800 + ... + 1353261.

It is an arithmetic number, because the mean of its divisors is an integer number (64945488).

Almost surely, 2^625100091 is an apocalyptic number.

625100091 is a deficient number, since it is larger than the sum of its proper divisors (414027717).

625100091 is a wasteful number, since it uses less digits than its factorization.

625100091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706082.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 625100091 is about 25002.0017398608. The cubic root of 625100091 is about 855.0336117562.

The spelling of 625100091 in words is "six hundred twenty-five million, one hundred thousand, ninety-one".