25252213 has 4 divisors (see below), whose sum is σ = 28859680. Its totient is φ = 21644748.

The previous prime is 25252193. The next prime is 25252247. The reversal of 25252213 is 31225252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25252213 - 2⁵ = 25252181 is a prime.

It is a super-2 number, since 2×25252213² = 1275348522794738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25252013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1803723 + ... + 1803736.

It is an arithmetic number, because the mean of its divisors is an integer number (7214920).

Almost surely, 2^25252213 is an apocalyptic number.

It is an amenable number.

25252213 is a deficient number, since it is larger than the sum of its proper divisors (3607467).

25252213 is an equidigital number, since it uses as much as digits as its factorization.

25252213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607466.

The product of its digits is 1200, while the sum is 22.

The square root of 25252213 is about 5025.1580074660. The cubic root of 25252213 is about 293.3817859298.

Adding to 25252213 its reverse (31225252), we get a palindrome (56477465).

The spelling of 25252213 in words is "twenty-five million, two hundred fifty-two thousand, two hundred thirteen".