125056017761 has 4 divisors (see below), whose sum is σ = 125097720000. Its totient is φ = 125014315524.

The previous prime is 125056017743. The next prime is 125056017781. The reversal of 125056017761 is 167710650521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125056017761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125056017701) 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, 20846621 + ... + 20852618.

It is an arithmetic number, because the mean of its divisors is an integer number (31274430000).

Almost surely, 2^125056017761 is an apocalyptic number.

It is an amenable number.

125056017761 is a deficient number, since it is larger than the sum of its proper divisors (41702239).

125056017761 is an equidigital number, since it uses as much as digits as its factorization.

125056017761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41702238.

The product of its (nonzero) digits is 88200, while the sum is 41.

The spelling of 125056017761 in words is "one hundred twenty-five billion, fifty-six million, seventeen thousand, seven hundred sixty-one".