25623213 has 16 divisors (see below), whose sum is σ = 42594816. Its totient is φ = 13310640.

The previous prime is 25623197. The next prime is 25623217. The reversal of 25623213 is 31232652.

It is not a de Polignac number, because 25623213 - 2⁴ = 25623197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25623217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55231 + ... + 55692.

It is an arithmetic number, because the mean of its divisors is an integer number (2662176).

Almost surely, 2^25623213 is an apocalyptic number.

It is an amenable number.

25623213 is a deficient number, since it is larger than the sum of its proper divisors (16971603).

25623213 is a wasteful number, since it uses less digits than its factorization.

25623213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110944.

The product of its digits is 2160, while the sum is 24.

The square root of 25623213 is about 5061.9376724729. The cubic root of 25623213 is about 294.8115736291.

Adding to 25623213 its reverse (31232652), we get a palindrome (56855865).

It can be divided in two parts, 2562 and 3213, that added together give a palindrome (5775).

The spelling of 25623213 in words is "twenty-five million, six hundred twenty-three thousand, two hundred thirteen".