125172035169 has 8 divisors (see below), whose sum is σ = 175680049440. Its totient is φ = 79056022176.

The previous prime is 125172035167. The next prime is 125172035213. The reversal of 125172035169 is 961530271521.

It is a happy number.

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

It is not a de Polignac number, because 125172035169 - 2¹ = 125172035167 is a prime.

It is a super-2 number, since 2×125172035169² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125172035169.

It is not an unprimeable number, because it can be changed into a prime (125172035161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098000252 + ... + 1098000365.

It is an arithmetic number, because the mean of its divisors is an integer number (21960006180).

Almost surely, 2^125172035169 is an apocalyptic number.

125172035169 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

125172035169 is a deficient number, since it is larger than the sum of its proper divisors (50508014271).

125172035169 is a wasteful number, since it uses less digits than its factorization.

125172035169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196000639.

The product of its (nonzero) digits is 113400, while the sum is 42.

The spelling of 125172035169 in words is "one hundred twenty-five billion, one hundred seventy-two million, thirty-five thousand, one hundred sixty-nine".