25992544990 has 16 divisors (see below), whose sum is σ = 47579574960. Its totient is φ = 10220797120.

The previous prime is 25992544979. The next prime is 25992545009. The reversal of 25992544990 is 9944529952.

It is a super-2 number, since 2×25992544990² (a number of 22 digits) contains 22 as substring.

It is a congruent 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, 22026991 + ... + 22028170.

It is an arithmetic number, because the mean of its divisors is an integer number (2973723435).

Almost surely, 2^25992544990 is an apocalyptic number.

25992544990 is a deficient number, since it is larger than the sum of its proper divisors (21587029970).

25992544990 is a wasteful number, since it uses less digits than its factorization.

25992544990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44055227.

The product of its (nonzero) digits is 10497600, while the sum is 58.

The spelling of 25992544990 in words is "twenty-five billion, nine hundred ninety-two million, five hundred forty-four thousand, nine hundred ninety".