20425363225 has 6 divisors (see below), whose sum is σ = 25327450430. Its totient is φ = 16340290560.

The previous prime is 20425363169. The next prime is 20425363237. The reversal of 20425363225 is 52236352402.

It can be written as a sum of positive squares in 3 ways, for example, as 3347316736 + 17078046489 = 57856^2 + 130683^2 .

It is not a de Polignac number, because 20425363225 - 2²⁵ = 20391808793 is a prime.

It is a super-3 number, since 3×20425363225³ (a number of 32 digits) contains 333 as substring.

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, 408507240 + ... + 408507289.

Almost surely, 2^20425363225 is an apocalyptic number.

20425363225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20425363225 is a deficient number, since it is larger than the sum of its proper divisors (4902087205).

20425363225 is an equidigital number, since it uses as much as digits as its factorization.

20425363225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817014539 (or 817014534 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

The spelling of 20425363225 in words is "twenty billion, four hundred twenty-five million, three hundred sixty-three thousand, two hundred twenty-five".