125073742757 has 4 divisors (see below), whose sum is σ = 125081308896. Its totient is φ = 125066176620.

The previous prime is 125073742679. The next prime is 125073742769. The reversal of 125073742757 is 757247370521.

It is a happy number.

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 not a de Polignac number, because 125073742757 - 2²⁶ = 125006633893 is a prime.

It is a super-2 number, since 2×125073742757² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125073745757) 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, 3758219 + ... + 3791352.

It is an arithmetic number, because the mean of its divisors is an integer number (31270327224).

Almost surely, 2^125073742757 is an apocalyptic number.

It is an amenable number.

125073742757 is a deficient number, since it is larger than the sum of its proper divisors (7566139).

125073742757 is an equidigital number, since it uses as much as digits as its factorization.

125073742757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7566138.

The product of its (nonzero) digits is 2881200, while the sum is 50.

The spelling of 125073742757 in words is "one hundred twenty-five billion, seventy-three million, seven hundred forty-two thousand, seven hundred fifty-seven".