125723908747 has 4 divisors (see below), whose sum is σ = 125724649576. Its totient is φ = 125723167920.

The previous prime is 125723908741. The next prime is 125723908753. The reversal of 125723908747 is 747809327521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 747809327521 = 19 ⋅39358385659.

It is an interprime number because it is at equal distance from previous prime (125723908741) and next prime (125723908753).

It is a cyclic number.

It is not a de Polignac number, because 125723908747 - 2³⁵ = 91364170379 is a prime.

It is a super-2 number, since 2×125723908747² (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 (125723908741) 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, 24472 + ... + 502042.

It is an arithmetic number, because the mean of its divisors is an integer number (31431162394).

Almost surely, 2^125723908747 is an apocalyptic number.

125723908747 is a deficient number, since it is larger than the sum of its proper divisors (740829).

125723908747 is an equidigital number, since it uses as much as digits as its factorization.

125723908747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740828.

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 125723908747 in words is "one hundred twenty-five billion, seven hundred twenty-three million, nine hundred eight thousand, seven hundred forty-seven".