12779325 has 72 divisors (see below), whose sum is σ = 26201448. Its totient is φ = 5898240.

The previous prime is 12779321. The next prime is 12779339. The reversal of 12779325 is 52397721.

It can be written as a sum of positive squares in 12 ways, for example, as 793881 + 11985444 = 891^2 + 3462^2 .

It is not a de Polignac number, because 12779325 - 2² = 12779321 is a prime.

It is a super-2 number, since 2×12779325² = 326622294911250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12779325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12779321) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 49597 + ... + 49853.

It is an arithmetic number, because the mean of its divisors is an integer number (363909).

Almost surely, 2^12779325 is an apocalyptic number.

12779325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12779325 is an abundant number, since it is smaller than the sum of its proper divisors (13422123).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12779325 is a wasteful number, since it uses less digits than its factorization.

12779325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 295 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 12779325 is about 3574.8181771945. The cubic root of 12779325 is about 233.7954052130.

The spelling of 12779325 in words is "twelve million, seven hundred seventy-nine thousand, three hundred twenty-five".