25992239040 has 140 divisors (see below), whose sum is σ = 92459059176. Its totient is φ = 6931256832.

The previous prime is 25992239033. The next prime is 25992239041. The reversal of 25992239040 is 4093229952.

25992239040 is a `hidden beast` number, since 2 + 599 + 22 + 39 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25992239041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 475474 + ... + 527313.

Almost surely, 2^25992239040 is an apocalyptic number.

25992239040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25992239040 is an abundant number, since it is smaller than the sum of its proper divisors (66466820136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25992239040 is a wasteful number, since it uses less digits than its factorization.

25992239040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002816 (or 1002797 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 25992239040 in words is "twenty-five billion, nine hundred ninety-two million, two hundred thirty-nine thousand, forty".