20204222425 has 12 divisors (see below), whose sum is σ = 25917141420. Its totient is φ = 15606019520.

The previous prime is 20204222417. The next prime is 20204222443. The reversal of 20204222425 is 52422240202.

It can be written as a sum of positive squares in 6 ways, for example, as 1174295824 + 19029926601 = 34268^2 + 137949^2 .

It is not a de Polignac number, because 20204222425 - 2³ = 20204222417 is a prime.

It is a super-3 number, since 3×20204222425³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 20204222425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13933222 + ... + 13934671.

It is an arithmetic number, because the mean of its divisors is an integer number (2159761785).

Almost surely, 2^20204222425 is an apocalyptic number.

20204222425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20204222425 is a deficient number, since it is larger than the sum of its proper divisors (5712918995).

20204222425 is a wasteful number, since it uses less digits than its factorization.

20204222425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27867932 (or 27867927 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 20204222425 its reverse (52422240202), we get a palindrome (72626462627).

The spelling of 20204222425 in words is "twenty billion, two hundred four million, two hundred twenty-two thousand, four hundred twenty-five".