625505329 has 4 divisors (see below), whose sum is σ = 631244020. Its totient is φ = 619766640.

The previous prime is 625505317. The next prime is 625505333. The reversal of 625505329 is 923505526.

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 507826225 + 117679104 = 22535^2 + 10848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625505329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625505339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2869182 + ... + 2869399.

It is an arithmetic number, because the mean of its divisors is an integer number (157811005).

Almost surely, 2^625505329 is an apocalyptic number.

It is an amenable number.

625505329 is a deficient number, since it is larger than the sum of its proper divisors (5738691).

625505329 is a wasteful number, since it uses less digits than its factorization.

625505329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5738690.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 625505329 is about 25010.1045379662. The cubic root of 625505329 is about 855.2183380469.

The spelling of 625505329 in words is "six hundred twenty-five million, five hundred five thousand, three hundred twenty-nine".