625388534 has 8 divisors (see below), whose sum is σ = 987455640. Its totient is φ = 296236656.

The previous prime is 625388527. The next prime is 625388557. The reversal of 625388534 is 435883526.

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

It is a super-2 number, since 2×625388534² = 782221636917338312, which contains 22 as substring.

It is a congruent number.

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, 8228759 + ... + 8228834.

It is an arithmetic number, because the mean of its divisors is an integer number (123431955).

Almost surely, 2^625388534 is an apocalyptic number.

625388534 is a deficient number, since it is larger than the sum of its proper divisors (362067106).

625388534 is a wasteful number, since it uses less digits than its factorization.

625388534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16457614.

The product of its digits is 691200, while the sum is 44.

The square root of 625388534 is about 25007.7694727059. The cubic root of 625388534 is about 855.1651056502.

The spelling of 625388534 in words is "six hundred twenty-five million, three hundred eighty-eight thousand, five hundred thirty-four".