12779125 has 8 divisors (see below), whose sum is σ = 15948504. Its totient is φ = 10223200.

The previous prime is 12779101. The next prime is 12779131. The reversal of 12779125 is 52197721.

It can be written as a sum of positive squares in 4 ways, for example, as 675684 + 12103441 = 822^2 + 3479^2 .

It is not a de Polignac number, because 12779125 - 2⁵ = 12779093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50992 + ... + 51241.

It is an arithmetic number, because the mean of its divisors is an integer number (1993563).

Almost surely, 2^12779125 is an apocalyptic number.

It is an amenable number.

12779125 is a deficient number, since it is larger than the sum of its proper divisors (3169379).

12779125 is an equidigital number, since it uses as much as digits as its factorization.

12779125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102248 (or 102238 counting only the distinct ones).

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

The square root of 12779125 is about 3574.7902036343. The cubic root of 12779125 is about 233.7941855522.

The spelling of 12779125 in words is "twelve million, seven hundred seventy-nine thousand, one hundred twenty-five".