125560921877 has 8 divisors (see below), whose sum is σ = 136038646656. Its totient is φ = 115426729152.

The previous prime is 125560921831. The next prime is 125560921879. The reversal of 125560921877 is 778129065521.

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

It is a cyclic number.

It is not a de Polignac number, because 125560921877 - 2¹⁸ = 125560659733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125560921879) 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, 85882253 + ... + 85883714.

It is an arithmetic number, because the mean of its divisors is an integer number (17004830832).

Almost surely, 2^125560921877 is an apocalyptic number.

125560921877 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

125560921877 is a deficient number, since it is larger than the sum of its proper divisors (10477724779).

125560921877 is a wasteful number, since it uses less digits than its factorization.

125560921877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171766027.

The product of its (nonzero) digits is 2116800, while the sum is 53.

The spelling of 125560921877 in words is "one hundred twenty-five billion, five hundred sixty million, nine hundred twenty-one thousand, eight hundred seventy-seven".