25340450604640 has 48 divisors (see below), whose sum is σ = 63017699537520. Its totient is φ = 9602697070080.

The previous prime is 25340450604569. The next prime is 25340450604671. The reversal of 25340450604640 is 4640605404352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4167834231 + ... + 4167840310.

It is an arithmetic number, because the mean of its divisors is an integer number (1312868740365).

Almost surely, 2^{25340450604640} is an apocalyptic number.

25340450604640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25340450604640 is an abundant number, since it is smaller than the sum of its proper divisors (37677248932880).

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

25340450604640 is a wasteful number, since it uses less digits than its factorization.

25340450604640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8335674575 (or 8335674567 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 43.

The spelling of 25340450604640 in words is "twenty-five trillion, three hundred forty billion, four hundred fifty million, six hundred four thousand, six hundred forty".