25840921832 has 32 divisors (see below), whose sum is σ = 53401360320. Its totient is φ = 11624778240.

The previous prime is 25840921831. The next prime is 25840921849. The reversal of 25840921832 is 23812904852.

It is a super-2 number, since 2×25840921832² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (25840921831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1505108 + ... + 1522179.

It is an arithmetic number, because the mean of its divisors is an integer number (1668792510).

Almost surely, 2^25840921832 is an apocalyptic number.

25840921832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25840921832 is an abundant number, since it is smaller than the sum of its proper divisors (27560438488).

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

25840921832 is a wasteful number, since it uses less digits than its factorization.

25840921832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027401 (or 3027397 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 25840921832 in words is "twenty-five billion, eight hundred forty million, nine hundred twenty-one thousand, eight hundred thirty-two".