25564313002 has 8 divisors (see below), whose sum is σ = 40364704800. Its totient is φ = 12109411404.

The previous prime is 25564312997. The next prime is 25564313017. The reversal of 25564313002 is 20031346552.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336372502 + ... + 336372577.

It is an arithmetic number, because the mean of its divisors is an integer number (5045588100).

Almost surely, 2^25564313002 is an apocalyptic number.

25564313002 is a deficient number, since it is larger than the sum of its proper divisors (14800391798).

25564313002 is a wasteful number, since it uses less digits than its factorization.

25564313002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672745100.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 25564313002 its reverse (20031346552), we get a palindrome (45595659554).

The spelling of 25564313002 in words is "twenty-five billion, five hundred sixty-four million, three hundred thirteen thousand, two".