20413502440025 has 6 divisors (see below), whose sum is σ = 25312743025662. Its totient is φ = 16330801952000.

The previous prime is 20413502439973. The next prime is 20413502440033. The reversal of 20413502440025 is 52004420531402.

It can be written as a sum of positive squares in 3 ways, for example, as 1049700653401 + 19363801786624 = 1024549^2 + 4400432^2 .

It is not a de Polignac number, because 20413502440025 - 2²⁴ = 20413485662809 is a prime.

It is a super-2 number, since 2×20413502440025² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20413502439973 and 20413502440000.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 408270048776 + ... + 408270048825.

It is an arithmetic number, because the mean of its divisors is an integer number (4218790504277).

Almost surely, 2^{20413502440025} is an apocalyptic number.

20413502440025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20413502440025 is a deficient number, since it is larger than the sum of its proper divisors (4899240585637).

20413502440025 is an equidigital number, since it uses as much as digits as its factorization.

20413502440025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816540097611 (or 816540097606 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 20413502440025 its reverse (52004420531402), we get a palindrome (72417922971427).

The spelling of 20413502440025 in words is "twenty trillion, four hundred thirteen billion, five hundred two million, four hundred forty thousand, twenty-five".