125491478 has 8 divisors (see below), whose sum is σ = 215128272. Its totient is φ = 53782056.

The previous prime is 125491451. The next prime is 125491481. The reversal of 125491478 is 874194521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×125491478² = 31496222101248968, which 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 3 ways as a sum of consecutive naturals, for example, 4481825 + ... + 4481852.

It is an arithmetic number, because the mean of its divisors is an integer number (26891034).

Almost surely, 2^125491478 is an apocalyptic number.

125491478 is a deficient number, since it is larger than the sum of its proper divisors (89636794).

125491478 is an equidigital number, since it uses as much as digits as its factorization.

125491478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8963686.

The product of its digits is 80640, while the sum is 41.

The square root of 125491478 is about 11202.2978892725. The cubic root of 125491478 is about 500.6544470245.

The spelling of 125491478 in words is "one hundred twenty-five million, four hundred ninety-one thousand, four hundred seventy-eight".