2563625661000 has 64 divisors (see below), whose sum is σ = 7998512071680. Its totient is φ = 683633508800.

The previous prime is 2563625660971. The next prime is 2563625661053. The reversal of 2563625661000 is 1665263652.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427267944 + ... + 427273943.

It is an arithmetic number, because the mean of its divisors is an integer number (124976751120).

Almost surely, 2^{2563625661000} is an apocalyptic number.

2563625661000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2563625661000 is an abundant number, since it is smaller than the sum of its proper divisors (5434886410680).

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

2563625661000 is a wasteful number, since it uses less digits than its factorization.

2563625661000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854541911 (or 854541897 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 2563625661000 in words is "two trillion, five hundred sixty-three billion, six hundred twenty-five million, six hundred sixty-one thousand".