125256633271 has 32 divisors (see below), whose sum is σ = 163129199616. Its totient is φ = 93258528000.

The previous prime is 125256633251. The next prime is 125256633283. The reversal of 125256633271 is 172336652521.

It is a happy number.

It is not a de Polignac number, because 125256633271 - 2¹³ = 125256625079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125256633241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1628931 + ... + 1704091.

It is an arithmetic number, because the mean of its divisors is an integer number (5097787488).

Almost surely, 2^125256633271 is an apocalyptic number.

125256633271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125256633271 is a deficient number, since it is larger than the sum of its proper divisors (37872566345).

125256633271 is a wasteful number, since it uses less digits than its factorization.

125256633271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76143.

The product of its digits is 453600, while the sum is 43.

The spelling of 125256633271 in words is "one hundred twenty-five billion, two hundred fifty-six million, six hundred thirty-three thousand, two hundred seventy-one".