12825551 has 4 divisors (see below), whose sum is σ = 13500600. Its totient is φ = 12150504.

The previous prime is 12825517. The next prime is 12825557. The reversal of 12825551 is 15552821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15552821 = 3307 ⋅4703.

It is a cyclic number.

It is not a de Polignac number, because 12825551 - 2²² = 8631247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12825557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337496 + ... + 337533.

It is an arithmetic number, because the mean of its divisors is an integer number (3375150).

Almost surely, 2^12825551 is an apocalyptic number.

12825551 is a deficient number, since it is larger than the sum of its proper divisors (675049).

12825551 is an equidigital number, since it uses as much as digits as its factorization.

12825551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675048.

The product of its digits is 4000, while the sum is 29.

The square root of 12825551 is about 3581.2778445689. The cubic root of 12825551 is about 234.0769647235.

The spelling of 12825551 in words is "twelve million, eight hundred twenty-five thousand, five hundred fifty-one".