20413163520625 has 20 divisors (see below), whose sum is σ = 25525421453620. Its totient is φ = 16319562624000.

The previous prime is 20413163520611. The next prime is 20413163520647. The reversal of 20413163520625 is 52602536131402.

It can be written as a sum of positive squares in 10 ways, for example, as 20363342155776 + 49821364849 = 4512576^2 + 223207^2 .

It is not a de Polignac number, because 20413163520625 - 2⁵ = 20413163520593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10036824 + ... + 11898073.

It is an arithmetic number, because the mean of its divisors is an integer number (1276271072681).

Almost surely, 2^{20413163520625} is an apocalyptic number.

20413163520625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20413163520625 is a deficient number, since it is larger than the sum of its proper divisors (5112257932995).

20413163520625 is an equidigital number, since it uses as much as digits as its factorization.

20413163520625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21936406 (or 21936391 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 20413163520625 in words is "twenty trillion, four hundred thirteen billion, one hundred sixty-three million, five hundred twenty thousand, six hundred twenty-five".