625999123 has 2 divisors, whose sum is σ = 625999124. Its totient is φ = 625999122.

The previous prime is 625999091. The next prime is 625999139. The reversal of 625999123 is 321999526.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625999123 - 2⁵ = 625999091 is a prime.

It is not a weakly prime, because it can be changed into another prime (625999223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312999561 + 312999562.

It is an arithmetic number, because the mean of its divisors is an integer number (312999562).

Almost surely, 2^625999123 is an apocalyptic number.

625999123 is a deficient number, since it is larger than the sum of its proper divisors (1).

625999123 is an equidigital number, since it uses as much as digits as its factorization.

625999123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 46.

The square root of 625999123 is about 25019.9744804027. The cubic root of 625999123 is about 855.4433244629.

The spelling of 625999123 in words is "six hundred twenty-five million, nine hundred ninety-nine thousand, one hundred twenty-three".