67129810925 has 12 divisors (see below), whose sum is σ = 84004647540. Its totient is φ = 53211150720.

The previous prime is 67129810921. The next prime is 67129810927. The reversal of 67129810925 is 52901892176.

It can be written as a sum of positive squares in 6 ways, for example, as 3836811364 + 63292999561 = 61942^2 + 251581^2 .

It is not a de Polignac number, because 67129810925 - 2² = 67129810921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67129810921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12314672 + ... + 12320121.

It is an arithmetic number, because the mean of its divisors is an integer number (7000387295).

Almost surely, 2^67129810925 is an apocalyptic number.

It is an amenable number.

67129810925 is a deficient number, since it is larger than the sum of its proper divisors (16874836615).

67129810925 is a wasteful number, since it uses less digits than its factorization.

67129810925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24634912 (or 24634907 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 67129810925 in words is "sixty-seven billion, one hundred twenty-nine million, eight hundred ten thousand, nine hundred twenty-five".