125779893705 has 12 divisors (see below), whose sum is σ = 218018482500. Its totient is φ = 67082609952.

The previous prime is 125779893691. The next prime is 125779893763. The reversal of 125779893705 is 507398977521.

125779893705 is a `hidden beast` number, since 1 + 257 + 7 + 9 + 8 + 9 + 370 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 36080242704 + 89699651001 = 189948^2 + 299499^2 .

It is not a de Polignac number, because 125779893705 - 2¹⁰ = 125779892681 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1397554330 + ... + 1397554419.

It is an arithmetic number, because the mean of its divisors is an integer number (18168206875).

Almost surely, 2^125779893705 is an apocalyptic number.

125779893705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125779893705 is a deficient number, since it is larger than the sum of its proper divisors (92238588795).

125779893705 is a wasteful number, since it uses less digits than its factorization.

125779893705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795108760 (or 2795108757 counting only the distinct ones).

The product of its (nonzero) digits is 33339600, while the sum is 63.

The spelling of 125779893705 in words is "one hundred twenty-five billion, seven hundred seventy-nine million, eight hundred ninety-three thousand, seven hundred five".