125970857737 has 4 divisors (see below), whose sum is σ = 126073860480. Its totient is φ = 125867854996.

The previous prime is 125970857729. The next prime is 125970857777. The reversal of 125970857737 is 737758079521.

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, and also an emirpimes, since its reverse is a distinct semiprime: 737758079521 = 85427 ⋅8636123.

It is a cyclic number.

It is not a de Polignac number, because 125970857737 - 2³ = 125970857729 is a prime.

It is a super-2 number, since 2×125970857737² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125970857777) 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, 51499537 + ... + 51501982.

It is an arithmetic number, because the mean of its divisors is an integer number (31518465120).

Almost surely, 2^125970857737 is an apocalyptic number.

It is an amenable number.

125970857737 is a deficient number, since it is larger than the sum of its proper divisors (103002743).

125970857737 is a wasteful number, since it uses less digits than its factorization.

125970857737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103002742.

The product of its (nonzero) digits is 25930800, while the sum is 61.

The spelling of 125970857737 in words is "one hundred twenty-five billion, nine hundred seventy million, eight hundred fifty-seven thousand, seven hundred thirty-seven".