12791725 has 6 divisors (see below), whose sum is σ = 15861770. Its totient is φ = 10233360.

The previous prime is 12791687. The next prime is 12791773. The reversal of 12791725 is 52719721.

It can be written as a sum of positive squares in 3 ways, for example, as 3175524 + 9616201 = 1782^2 + 3101^2 .

It is not a de Polignac number, because 12791725 - 2¹¹ = 12789677 is a prime.

It is a super-4 number, since 4×12791725⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 255810 + ... + 255859.

Almost surely, 2^12791725 is an apocalyptic number.

It is an amenable number.

12791725 is a deficient number, since it is larger than the sum of its proper divisors (3070045).

12791725 is an equidigital number, since it uses as much as digits as its factorization.

12791725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511679 (or 511674 counting only the distinct ones).

The product of its digits is 8820, while the sum is 34.

The square root of 12791725 is about 3576.5521106227. The cubic root of 12791725 is about 233.8709993428.

The spelling of 12791725 in words is "twelve million, seven hundred ninety-one thousand, seven hundred twenty-five".