625729530394 has 8 divisors (see below), whose sum is σ = 953981087508. Its totient is φ = 307735834560.

The previous prime is 625729530379. The next prime is 625729530403. The reversal of 625729530394 is 493035927526.

It can be written as a sum of positive squares in 2 ways, for example, as 586046898369 + 39682632025 = 765537^2 + 199205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2564465167 + ... + 2564465410.

Almost surely, 2^625729530394 is an apocalyptic number.

625729530394 is a deficient number, since it is larger than the sum of its proper divisors (328251557114).

625729530394 is a wasteful number, since it uses less digits than its factorization.

625729530394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128930640.

The product of its (nonzero) digits is 12247200, while the sum is 55.

The spelling of 625729530394 in words is "six hundred twenty-five billion, seven hundred twenty-nine million, five hundred thirty thousand, three hundred ninety-four".