25813285490 has 16 divisors (see below), whose sum is σ = 46488313152. Its totient is φ = 10319892144.

The previous prime is 25813285481. The next prime is 25813285501. The reversal of 25813285490 is 9458231852.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657734 + ... + 695873.

It is an arithmetic number, because the mean of its divisors is an integer number (2905519572).

Almost surely, 2^25813285490 is an apocalyptic number.

25813285490 is a deficient number, since it is larger than the sum of its proper divisors (20675027662).

25813285490 is a wasteful number, since it uses less digits than its factorization.

25813285490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355521.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 25813285490 in words is "twenty-five billion, eight hundred thirteen million, two hundred eighty-five thousand, four hundred ninety".