25451543325040 has 80 divisors (see below), whose sum is σ = 67634910374400. Its totient is φ = 8725401642240.

The previous prime is 25451543325023. The next prime is 25451543325067. The reversal of 25451543325040 is 4052334515452.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3632011 + ... + 8005909.

It is an arithmetic number, because the mean of its divisors is an integer number (845436379680).

Almost surely, 2^{25451543325040} is an apocalyptic number.

25451543325040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25451543325040 is an abundant number, since it is smaller than the sum of its proper divisors (42183367049360).

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

25451543325040 is a wasteful number, since it uses less digits than its factorization.

25451543325040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384310 (or 4384304 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 43.

The spelling of 25451543325040 in words is "twenty-five trillion, four hundred fifty-one billion, five hundred forty-three million, three hundred twenty-five thousand, forty".