125915681145 has 16 divisors (see below), whose sum is σ = 201469560192. Its totient is φ = 67153539840.

The previous prime is 125915681137. The next prime is 125915681161. The reversal of 125915681145 is 541186519521.

It is a happy number.

It is not a de Polignac number, because 125915681145 - 2³ = 125915681137 is a prime.

It is a super-2 number, since 2×125915681145² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125915681094 and 125915681103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1091425 + ... + 1201265.

It is an arithmetic number, because the mean of its divisors is an integer number (12591847512).

Almost surely, 2^125915681145 is an apocalyptic number.

125915681145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125915681145 is a deficient number, since it is larger than the sum of its proper divisors (75553879047).

125915681145 is a wasteful number, since it uses less digits than its factorization.

125915681145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186272.

The product of its digits is 432000, while the sum is 48.

The spelling of 125915681145 in words is "one hundred twenty-five billion, nine hundred fifteen million, six hundred eighty-one thousand, one hundred forty-five".