25821441452 has 12 divisors (see below), whose sum is σ = 46408807200. Its totient is φ = 12561782256.

The previous prime is 25821441409. The next prime is 25821441461. The reversal of 25821441452 is 25414412852.

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 3 ways as a sum of consecutive naturals, for example, 87234452 + ... + 87234747.

It is an arithmetic number, because the mean of its divisors is an integer number (3867400600).

Almost surely, 2^25821441452 is an apocalyptic number.

It is an amenable number.

25821441452 is a deficient number, since it is larger than the sum of its proper divisors (20587365748).

25821441452 is a wasteful number, since it uses less digits than its factorization.

25821441452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174469240 (or 174469238 counting only the distinct ones).

The product of its digits is 102400, while the sum is 38.

The spelling of 25821441452 in words is "twenty-five billion, eight hundred twenty-one million, four hundred forty-one thousand, four hundred fifty-two".