125091705 has 32 divisors (see below), whose sum is σ = 205873920. Its totient is φ = 64834560.

The previous prime is 125091691. The next prime is 125091719. The reversal of 125091705 is 507190521.

It is an interprime number because it is at equal distance from previous prime (125091691) and next prime (125091719).

It is not a de Polignac number, because 125091705 - 2⁴ = 125091689 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76941 + ... + 78549.

It is an arithmetic number, because the mean of its divisors is an integer number (6433560).

Almost surely, 2^125091705 is an apocalyptic number.

125091705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125091705 is a deficient number, since it is larger than the sum of its proper divisors (80782215).

125091705 is a wasteful number, since it uses less digits than its factorization.

125091705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 125091705 is about 11184.4403078563. The cubic root of 125091705 is about 500.1222434440.

The spelling of 125091705 in words is "one hundred twenty-five million, ninety-one thousand, seven hundred five".