25332645 has 32 divisors (see below), whose sum is σ = 43972992. Its totient is φ = 12379392.

The previous prime is 25332641. The next prime is 25332647. The reversal of 25332645 is 54623352.

It is not a de Polignac number, because 25332645 - 2² = 25332641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25332641) 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 31 ways as a sum of consecutive naturals, for example, 31387 + ... + 32183.

It is an arithmetic number, because the mean of its divisors is an integer number (1374156).

Almost surely, 2^25332645 is an apocalyptic number.

It is an amenable number.

25332645 is a deficient number, since it is larger than the sum of its proper divisors (18640347).

25332645 is a wasteful number, since it uses less digits than its factorization.

25332645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its digits is 21600, while the sum is 30.

The square root of 25332645 is about 5033.1545773997. The cubic root of 25332645 is about 293.6929438000.

Adding to 25332645 its reverse (54623352), we get a palindrome (79955997).

The spelling of 25332645 in words is "twenty-five million, three hundred thirty-two thousand, six hundred forty-five".