25791213 has 8 divisors (see below), whose sum is σ = 39300928. Its totient is φ = 14737824.

The previous prime is 25791191. The next prime is 25791223. The reversal of 25791213 is 31219752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25791213 - 2⁸ = 25790957 is a prime.

It is a super-2 number, since 2×25791213² = 1330373336022738, 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 (25791223) 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 7 ways as a sum of consecutive naturals, for example, 614056 + ... + 614097.

It is an arithmetic number, because the mean of its divisors is an integer number (4912616).

Almost surely, 2^25791213 is an apocalyptic number.

It is an amenable number.

25791213 is a deficient number, since it is larger than the sum of its proper divisors (13509715).

25791213 is a wasteful number, since it uses less digits than its factorization.

25791213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228163.

The product of its digits is 3780, while the sum is 30.

The square root of 25791213 is about 5078.5049965516. The cubic root of 25791213 is about 295.4544866502.

The spelling of 25791213 in words is "twenty-five million, seven hundred ninety-one thousand, two hundred thirteen".