125040905 has 8 divisors (see below), whose sum is σ = 163689984. Its totient is φ = 90938800.

The previous prime is 125040893. The next prime is 125040931. The reversal of 125040905 is 509040521.

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

It is not a de Polignac number, because 125040905 - 2⁶ = 125040841 is a prime.

It is a Duffinian 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, 1136681 + ... + 1136790.

It is an arithmetic number, because the mean of its divisors is an integer number (20461248).

Almost surely, 2^125040905 is an apocalyptic number.

It is an amenable number.

125040905 is a deficient number, since it is larger than the sum of its proper divisors (38649079).

125040905 is a wasteful number, since it uses less digits than its factorization.

125040905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273487.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 125040905 is about 11182.1690650786. The cubic root of 125040905 is about 500.0545340519.

The spelling of 125040905 in words is "one hundred twenty-five million, forty thousand, nine hundred five".