20325580641 has 16 divisors (see below), whose sum is σ = 30183854400. Its totient is φ = 13518039744.

The previous prime is 20325580637. The next prime is 20325580663. The reversal of 20325580641 is 14608552302.

20325580641 is a `hidden beast` number, since 2 + 0 + 3 + 2 + 5 + 5 + 8 + 0 + 641 = 666.

It is not a de Polignac number, because 20325580641 - 2² = 20325580637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20325580596 and 20325580605.

It is not an unprimeable number, because it can be changed into a prime (20325580601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 887016 + ... + 909641.

It is an arithmetic number, because the mean of its divisors is an integer number (1886490900).

Almost surely, 2^20325580641 is an apocalyptic number.

It is an amenable number.

20325580641 is a deficient number, since it is larger than the sum of its proper divisors (9858273759).

20325580641 is a wasteful number, since it uses less digits than its factorization.

20325580641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797085 (or 1797079 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 20325580641 in words is "twenty billion, three hundred twenty-five million, five hundred eighty thousand, six hundred forty-one".