25820443029924 has 45 divisors (see below), whose sum is σ = 67499977522747. Its totient is φ = 8606783855016.

The previous prime is 25820443029907. The next prime is 25820443029973. The reversal of 25820443029924 is 42992034402852.

The square root of 25820443029924 is 5081382.

It is a perfect power (a square), and thus also a powerful number.

25820443029924 is a `hidden beast` number, since 2 + 582 + 0 + 4 + 4 + 30 + 2 + 9 + 9 + 24 = 666.

It is a super-3 number, since 3×25820443029924³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 91323727 + ... + 91606025.

Almost surely, 2^{25820443029924} is an apocalyptic number.

25820443029924 is the 5081382-nd square number.

It is an amenable number.

25820443029924 is an abundant number, since it is smaller than the sum of its proper divisors (41679534492823).

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

25820443029924 is an frugal number, since it uses more digits than its factorization.

25820443029924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564614 (or 282304 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 25820443029924 in words is "twenty-five trillion, eight hundred twenty billion, four hundred forty-three million, twenty-nine thousand, nine hundred twenty-four".