25612213 has 8 divisors (see below), whose sum is σ = 28012320. Its totient is φ = 23224080.

The previous prime is 25612211. The next prime is 25612229. The reversal of 25612213 is 31221652.

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

It is not a de Polignac number, because 25612213 - 2¹ = 25612211 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 (25612211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1831 + ... + 7387.

It is an arithmetic number, because the mean of its divisors is an integer number (3501540).

Almost surely, 2^25612213 is an apocalyptic number.

It is an amenable number.

25612213 is a deficient number, since it is larger than the sum of its proper divisors (2400107).

25612213 is a wasteful number, since it uses less digits than its factorization.

25612213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5987.

The product of its digits is 720, while the sum is 22.

The square root of 25612213 is about 5060.8510153926. The cubic root of 25612213 is about 294.7693802284.

Adding to 25612213 its reverse (31221652), we get a palindrome (56833865).

It can be divided in two parts, 2561 and 2213, that added together give a palindrome (4774).

The spelling of 25612213 in words is "twenty-five million, six hundred twelve thousand, two hundred thirteen".