25440560086550 has 24 divisors (see below), whose sum is σ = 54079362013296. Its totient is φ = 8722477743840.

The previous prime is 25440560086549. The next prime is 25440560086567. The reversal of 25440560086550 is 5568006504452.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36343656917 + ... + 36343657616.

It is an arithmetic number, because the mean of its divisors is an integer number (2253306750554).

Almost surely, 2^{25440560086550} is an apocalyptic number.

25440560086550 is an abundant number, since it is smaller than the sum of its proper divisors (28638801926746).

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

25440560086550 is a wasteful number, since it uses less digits than its factorization.

25440560086550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72687314552 (or 72687314547 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 50.

The spelling of 25440560086550 in words is "twenty-five trillion, four hundred forty billion, five hundred sixty million, eighty-six thousand, five hundred fifty".