125137501263 has 48 divisors (see below), whose sum is σ = 197391783680. Its totient is φ = 79003257984.

The previous prime is 125137501253. The next prime is 125137501271. The reversal of 125137501263 is 362105731521.

125137501263 is a `hidden beast` number, since 1 + 2 + 513 + 75 + 0 + 12 + 63 = 666.

It is not a de Polignac number, because 125137501263 - 2¹³ = 125137493071 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 (125137501253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19725270 + ... + 19731612.

Almost surely, 2^125137501263 is an apocalyptic number.

125137501263 is a deficient number, since it is larger than the sum of its proper divisors (72254282417).

125137501263 is an equidigital number, since it uses as much as digits as its factorization.

125137501263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10650 (or 10638 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 125137501263 in words is "one hundred twenty-five billion, one hundred thirty-seven million, five hundred one thousand, two hundred sixty-three".