105640790725 has 12 divisors (see below), whose sum is σ = 134040967456. Its totient is φ = 82547221680.

The previous prime is 105640790677. The next prime is 105640790747. The reversal of 105640790725 is 527097046501.

It is not a de Polignac number, because 105640790725 - 2¹⁷ = 105640659653 is a prime.

It is a super-2 number, since 2×105640790725² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49134177 + ... + 49136326.

Almost surely, 2^105640790725 is an apocalyptic number.

It is an amenable number.

105640790725 is a deficient number, since it is larger than the sum of its proper divisors (28400176731).

105640790725 is an equidigital number, since it uses as much as digits as its factorization.

105640790725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98270556 (or 98270551 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 105640790725 in words is "one hundred five billion, six hundred forty million, seven hundred ninety thousand, seven hundred twenty-five".