25251213 has 16 divisors (see below), whose sum is σ = 36349376. Its totient is φ = 15500160.

The previous prime is 25251181. The next prime is 25251223. The reversal of 25251213 is 31215252.

It is not a de Polignac number, because 25251213 - 2⁵ = 25251181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25251213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25251223) 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 15 ways as a sum of consecutive naturals, for example, 26481 + ... + 27417.

It is an arithmetic number, because the mean of its divisors is an integer number (2271836).

Almost surely, 2^25251213 is an apocalyptic number.

It is an amenable number.

25251213 is a deficient number, since it is larger than the sum of its proper divisors (11098163).

25251213 is a wasteful number, since it uses less digits than its factorization.

25251213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644.

The product of its digits is 600, while the sum is 21.

The square root of 25251213 is about 5025.0585071221. The cubic root of 25251213 is about 293.3779131913.

Adding to 25251213 its reverse (31215252), we get a palindrome (56466465).

The spelling of 25251213 in words is "twenty-five million, two hundred fifty-one thousand, two hundred thirteen".