125280705 has 32 divisors (see below), whose sum is σ = 224592768. Its totient is φ = 59097600.

The previous prime is 125280697. The next prime is 125280719. The reversal of 125280705 is 507082521.

It is not a de Polignac number, because 125280705 - 2³ = 125280697 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4156 + ... + 16365.

It is an arithmetic number, because the mean of its divisors is an integer number (7018524).

Almost surely, 2^125280705 is an apocalyptic number.

125280705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125280705 is a deficient number, since it is larger than the sum of its proper divisors (99312063).

125280705 is a wasteful number, since it uses less digits than its factorization.

125280705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20577.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 125280705 is about 11192.8863569680. The cubic root of 125280705 is about 500.3739935213.

The spelling of 125280705 in words is "one hundred twenty-five million, two hundred eighty thousand, seven hundred five".