925810512139 has 2 divisors, whose sum is σ = 925810512140. Its totient is φ = 925810512138.

The previous prime is 925810512131. The next prime is 925810512169. The reversal of 925810512139 is 931215018529.

It is a weak prime.

It is an emirp because it is prime and its reverse (931215018529) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 925810512139 - 2³ = 925810512131 is a prime.

It is not a weakly prime, because it can be changed into another prime (925810512131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 462905256069 + 462905256070.

It is an arithmetic number, because the mean of its divisors is an integer number (462905256070).

Almost surely, 2^925810512139 is an apocalyptic number.

925810512139 is a deficient number, since it is larger than the sum of its proper divisors (1).

925810512139 is an equidigital number, since it uses as much as digits as its factorization.

925810512139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 46.

The spelling of 925810512139 in words is "nine hundred twenty-five billion, eight hundred ten million, five hundred twelve thousand, one hundred thirty-nine".