625434164 has 6 divisors (see below), whose sum is σ = 1094509794. Its totient is φ = 312717080.

The previous prime is 625434163. The next prime is 625434167. The reversal of 625434164 is 461434526.

625434164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 351862564 + 273571600 = 18758^2 + 16540^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625434163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78179267 + ... + 78179274.

It is an arithmetic number, because the mean of its divisors is an integer number (182418299).

Almost surely, 2^625434164 is an apocalyptic number.

It is an amenable number.

625434164 is a deficient number, since it is larger than the sum of its proper divisors (469075630).

625434164 is a wasteful number, since it uses less digits than its factorization.

625434164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156358545 (or 156358543 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 625434164 is about 25008.6817725365. The cubic root of 625434164 is about 855.1859035130.

The spelling of 625434164 in words is "six hundred twenty-five million, four hundred thirty-four thousand, one hundred sixty-four".