25440002 has 16 divisors (see below), whose sum is σ = 43772352. Its totient is φ = 10862640.

The previous prime is 25439969. The next prime is 25440011. The reversal of 25440002 is 20004452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752 + ... + 7172.

It is an arithmetic number, because the mean of its divisors is an integer number (2735772).

Almost surely, 2^25440002 is an apocalyptic number.

25440002 is a deficient number, since it is larger than the sum of its proper divisors (18332350).

25440002 is a wasteful number, since it uses less digits than its factorization.

25440002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6713.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 25440002 is about 5043.8082834303. The cubic root of 25440002 is about 294.1072387109.

Adding to 25440002 its reverse (20004452), we get a palindrome (45444454).

The spelling of 25440002 in words is "twenty-five million, four hundred forty thousand, two".