625137892 has 6 divisors (see below), whose sum is σ = 1093991318. Its totient is φ = 312568944.

The previous prime is 625137883. The next prime is 625137899. The reversal of 625137892 is 298731526.

It can be written as a sum of positive squares in only one way, i.e., 534811876 + 90326016 = 23126^2 + 9504^2 .

It is not an unprimeable number, because it can be changed into a prime (625137899) 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 as a sum of consecutive naturals, namely, 78142233 + ... + 78142240.

Almost surely, 2^625137892 is an apocalyptic number.

It is an amenable number.

625137892 is a deficient number, since it is larger than the sum of its proper divisors (468853426).

625137892 is a wasteful number, since it uses less digits than its factorization.

625137892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156284477 (or 156284475 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 625137892 is about 25002.7576879031. The cubic root of 625137892 is about 855.0508465823.

The spelling of 625137892 in words is "six hundred twenty-five million, one hundred thirty-seven thousand, eight hundred ninety-two".