25645213 has 16 divisors (see below), whose sum is σ = 28994112. Its totient is φ = 22480000.

The previous prime is 25645211. The next prime is 25645241. The reversal of 25645213 is 31254652.

It is a cyclic number.

It is not a de Polignac number, because 25645213 - 2¹ = 25645211 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 (25645211) 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, 45270 + ... + 45832.

It is an arithmetic number, because the mean of its divisors is an integer number (1812132).

Almost surely, 2^25645213 is an apocalyptic number.

It is an amenable number.

25645213 is a deficient number, since it is larger than the sum of its proper divisors (3348899).

25645213 is a wasteful number, since it uses less digits than its factorization.

25645213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716.

The product of its digits is 7200, while the sum is 28.

The square root of 25645213 is about 5064.1102871087. The cubic root of 25645213 is about 294.8959242172.

Adding to 25645213 its reverse (31254652), we get a palindrome (56899865).

It can be divided in two parts, 2564 and 5213, that added together give a palindrome (7777).

The spelling of 25645213 in words is "twenty-five million, six hundred forty-five thousand, two hundred thirteen".