12291725 has 6 divisors (see below), whose sum is σ = 15241770. Its totient is φ = 9833360.

The previous prime is 12291703. The next prime is 12291749. The reversal of 12291725 is 52719221.

It can be written as a sum of positive squares in 3 ways, for example, as 806404 + 11485321 = 898^2 + 3389^2 .

It is not a de Polignac number, because 12291725 - 2⁶ = 12291661 is a prime.

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, 245810 + ... + 245859.

It is an arithmetic number, because the mean of its divisors is an integer number (2540295).

Almost surely, 2^12291725 is an apocalyptic number.

It is an amenable number.

12291725 is a deficient number, since it is larger than the sum of its proper divisors (2950045).

12291725 is an equidigital number, since it uses as much as digits as its factorization.

12291725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491679 (or 491674 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 12291725 is about 3505.9556471810. The cubic root of 12291725 is about 230.7832465134.

The spelling of 12291725 in words is "twelve million, two hundred ninety-one thousand, seven hundred twenty-five".