125481257547 has 16 divisors (see below), whose sum is σ = 176133323520. Its totient is φ = 79242645600.

The previous prime is 125481257507. The next prime is 125481257549. The reversal of 125481257547 is 745752184521.

It is not a de Polignac number, because 125481257547 - 2²⁷ = 125347039819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125481257547.

It is not an unprimeable number, because it can be changed into a prime (125481257549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426397 + ... + 657857.

It is an arithmetic number, because the mean of its divisors is an integer number (11008332720).

Almost surely, 2^125481257547 is an apocalyptic number.

125481257547 is a deficient number, since it is larger than the sum of its proper divisors (50652065973).

125481257547 is a wasteful number, since it uses less digits than its factorization.

125481257547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240994.

The product of its digits is 3136000, while the sum is 51.

The spelling of 125481257547 in words is "one hundred twenty-five billion, four hundred eighty-one million, two hundred fifty-seven thousand, five hundred forty-seven".