25291213 has 2 divisors, whose sum is σ = 25291214. Its totient is φ = 25291212.

The previous prime is 25291193. The next prime is 25291241. The reversal of 25291213 is 31219252.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25180324 + 110889 = 5018^2 + 333^2 .

It is a cyclic number.

It is not a de Polignac number, because 25291213 - 2⁹ = 25290701 is a prime.

It is a super-2 number, since 2×25291213² = 1279290910022738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25291813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12645606 + 12645607.

It is an arithmetic number, because the mean of its divisors is an integer number (12645607).

Almost surely, 2^25291213 is an apocalyptic number.

It is an amenable number.

25291213 is a deficient number, since it is larger than the sum of its proper divisors (1).

25291213 is an equidigital number, since it uses as much as digits as its factorization.

25291213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 25291213 is about 5029.0369853482. The cubic root of 25291213 is about 293.5327430538.

The spelling of 25291213 in words is "twenty-five million, two hundred ninety-one thousand, two hundred thirteen".