20613675025 has 6 divisors (see below), whose sum is σ = 25560957062. Its totient is φ = 16490940000.

The previous prime is 20613675011. The next prime is 20613675059. The reversal of 20613675025 is 52057631602.

It can be written as a sum of positive squares in 3 ways, for example, as 20277009 + 20593398016 = 4503^2 + 143504^2 .

It is not a de Polignac number, because 20613675025 - 2⁷ = 20613674897 is a prime.

It is a Duffinian number.

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, 412273476 + ... + 412273525.

Almost surely, 2^20613675025 is an apocalyptic number.

20613675025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20613675025 is a deficient number, since it is larger than the sum of its proper divisors (4947282037).

20613675025 is an equidigital number, since it uses as much as digits as its factorization.

20613675025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824547011 (or 824547006 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 20613675025 in words is "twenty billion, six hundred thirteen million, six hundred seventy-five thousand, twenty-five".