125425764025 has 27 divisors (see below), whose sum is σ = 156765116781. Its totient is φ = 99548720640.

The previous prime is 125425763963. The next prime is 125425764029. The reversal of 125425764025 is 520467524521.

The square root of 125425764025 is 354155.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 20172236841 + 105253527184 = 142029^2 + 324428^2 .

It is a de Polignac number, because none of the positive numbers 2^k-125425764025 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125425764029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 341759392 + ... + 341759758.

Almost surely, 2^125425764025 is an apocalyptic number.

125425764025 is the 354155-th square number.

125425764025 is the 177078-th centered octagonal number.

It is an amenable number.

125425764025 is a deficient number, since it is larger than the sum of its proper divisors (31339352756).

125425764025 is an frugal number, since it uses more digits than its factorization.

125425764025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 43.

The spelling of 125425764025 in words is "one hundred twenty-five billion, four hundred twenty-five million, seven hundred sixty-four thousand, twenty-five".