625349477321 has 4 divisors (see below), whose sum is σ = 628843050000. Its totient is φ = 621855904644.

The previous prime is 625349477279. The next prime is 625349477327. The reversal of 625349477321 is 123774943526.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 625349477321 - 2¹⁸ = 625349215177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625349477327) 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, 1746786071 + ... + 1746786428.

It is an arithmetic number, because the mean of its divisors is an integer number (157210762500).

Almost surely, 2^625349477321 is an apocalyptic number.

It is an amenable number.

625349477321 is a deficient number, since it is larger than the sum of its proper divisors (3493572679).

625349477321 is a wasteful number, since it uses less digits than its factorization.

625349477321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493572678.

The product of its digits is 7620480, while the sum is 53.

The spelling of 625349477321 in words is "six hundred twenty-five billion, three hundred forty-nine million, four hundred seventy-seven thousand, three hundred twenty-one".