625534513 has 4 divisors (see below), whose sum is σ = 625586688. Its totient is φ = 625482340.

The previous prime is 625534501. The next prime is 625534517. The reversal of 625534513 is 315435526.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625534513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625534517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920 + ... + 35422.

It is an arithmetic number, because the mean of its divisors is an integer number (156396672).

Almost surely, 2^625534513 is an apocalyptic number.

It is an amenable number.

625534513 is a deficient number, since it is larger than the sum of its proper divisors (52175).

625534513 is a wasteful number, since it uses less digits than its factorization.

625534513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52174.

The product of its digits is 54000, while the sum is 34.

The square root of 625534513 is about 25010.6879753437. The cubic root of 625534513 is about 855.2316383886.

The spelling of 625534513 in words is "six hundred twenty-five million, five hundred thirty-four thousand, five hundred thirteen".