125645633127 has 24 divisors (see below), whose sum is σ = 207451988640. Its totient is φ = 71784705600.

The previous prime is 125645633111. The next prime is 125645633129. The reversal of 125645633127 is 721336546521.

125645633127 is a `hidden beast` number, since 1 + 2 + 5 + 6 + 4 + 5 + 633 + 1 + 2 + 7 = 666.

It is not a de Polignac number, because 125645633127 - 2⁴ = 125645633111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125645633129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184249 + ... + 534077.

It is an arithmetic number, because the mean of its divisors is an integer number (8643832860).

Almost surely, 2^125645633127 is an apocalyptic number.

125645633127 is a deficient number, since it is larger than the sum of its proper divisors (81806355513).

125645633127 is a wasteful number, since it uses less digits than its factorization.

125645633127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355543 (or 355540 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The spelling of 125645633127 in words is "one hundred twenty-five billion, six hundred forty-five million, six hundred thirty-three thousand, one hundred twenty-seven".