125581333478 has 16 divisors (see below), whose sum is σ = 193820799984. Its totient is φ = 60980675040.

The previous prime is 125581333421. The next prime is 125581333481. The reversal of 125581333478 is 874333185521.

It is a super-2 number, since 2×125581333478² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1528400 + ... + 1608467.

It is an arithmetic number, because the mean of its divisors is an integer number (12113799999).

Almost surely, 2^125581333478 is an apocalyptic number.

125581333478 is a deficient number, since it is larger than the sum of its proper divisors (68239466506).

125581333478 is a wasteful number, since it uses less digits than its factorization.

125581333478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3137447.

The product of its digits is 2419200, while the sum is 50.

The spelling of 125581333478 in words is "one hundred twenty-five billion, five hundred eighty-one million, three hundred thirty-three thousand, four hundred seventy-eight".