625500099 has 48 divisors (see below), whose sum is σ = 1050528960. Its totient is φ = 351267840.

The previous prime is 625500067. The next prime is 625500103. The reversal of 625500099 is 990005526.

625500099 is a `hidden beast` number, since 62 + 5 + 500 + 0 + 99 = 666.

625500099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 25010²-1.

It is not a de Polignac number, because 625500099 - 2⁵ = 625500067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625500049) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1575369 + ... + 1575765.

It is an arithmetic number, because the mean of its divisors is an integer number (21886020).

Almost surely, 2^625500099 is an apocalyptic number.

625500099 is a deficient number, since it is larger than the sum of its proper divisors (425028861).

625500099 is a wasteful number, since it uses less digits than its factorization.

625500099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 625500099 is about 25009.9999800080. Note that the first 4 decimals coincide. The cubic root of 625500099 is about 855.2159544784.

The spelling of 625500099 in words is "six hundred twenty-five million, five hundred thousand, ninety-nine".