125051976761 has 4 divisors (see below), whose sum is σ = 132407975412. Its totient is φ = 117695978112.

The previous prime is 125051976757. The next prime is 125051976769. The reversal of 125051976761 is 167679150521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69554040361 + 55497936400 = 263731^2 + 235580^2 .

It is a cyclic number.

It is not a de Polignac number, because 125051976761 - 2² = 125051976757 is a prime.

It is a super-2 number, since 2×125051976761² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125051976769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3677999300 + ... + 3677999333.

It is an arithmetic number, because the mean of its divisors is an integer number (33101993853).

Almost surely, 2^125051976761 is an apocalyptic number.

It is an amenable number.

125051976761 is a deficient number, since it is larger than the sum of its proper divisors (7355998651).

125051976761 is an equidigital number, since it uses as much as digits as its factorization.

125051976761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7355998650.

The product of its (nonzero) digits is 793800, while the sum is 50.

The spelling of 125051976761 in words is "one hundred twenty-five billion, fifty-one million, nine hundred seventy-six thousand, seven hundred sixty-one".