625831145 has 4 divisors (see below), whose sum is σ = 750997380. Its totient is φ = 500664912.

The previous prime is 625831103. The next prime is 625831153. The reversal of 625831145 is 541138526.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 142754704 + 483076441 = 11948^2 + 21979^2 .

It is a cyclic number.

It is not a de Polignac number, because 625831145 - 2⁸ = 625830889 is a prime.

It is a super-2 number, since 2×625831145² = 783329244104022050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62583110 + ... + 62583119.

It is an arithmetic number, because the mean of its divisors is an integer number (187749345).

Almost surely, 2^625831145 is an apocalyptic number.

It is an amenable number.

625831145 is a deficient number, since it is larger than the sum of its proper divisors (125166235).

625831145 is a wasteful number, since it uses less digits than its factorization.

625831145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125166234.

The product of its digits is 28800, while the sum is 35.

The square root of 625831145 is about 25016.6173772555. The cubic root of 625831145 is about 855.3668022505.

The spelling of 625831145 in words is "six hundred twenty-five million, eight hundred thirty-one thousand, one hundred forty-five".