25312213 has 16 divisors (see below), whose sum is σ = 27574272. Its totient is φ = 23166000.

The previous prime is 25312207. The next prime is 25312229. The reversal of 25312213 is 31221352.

It is a cyclic number.

It is not a de Polignac number, because 25312213 - 2¹³ = 25304021 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 (25312253) 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 in 15 ways as a sum of consecutive naturals, for example, 93268 + ... + 93538.

It is an arithmetic number, because the mean of its divisors is an integer number (1723392).

Almost surely, 2^25312213 is an apocalyptic number.

25312213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25312213 is a deficient number, since it is larger than the sum of its proper divisors (2262059).

25312213 is a wasteful number, since it uses less digits than its factorization.

25312213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456.

The product of its digits is 360, while the sum is 19.

The square root of 25312213 is about 5031.1244270044. The cubic root of 25312213 is about 293.6139633877.

Adding to 25312213 its reverse (31221352), we get a palindrome (56533565).

The spelling of 25312213 in words is "twenty-five million, three hundred twelve thousand, two hundred thirteen".