20343396025 has 6 divisors (see below), whose sum is σ = 25225811102. Its totient is φ = 16274716800.

The previous prime is 20343395999. The next prime is 20343396053. The reversal of 20343396025 is 52069334302.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5158256041 + 15185139984 = 71821^2 + 123228^2 .

It is not a de Polignac number, because 20343396025 - 2¹¹ = 20343393977 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, 406867896 + ... + 406867945.

Almost surely, 2^20343396025 is an apocalyptic number.

20343396025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20343396025 is a deficient number, since it is larger than the sum of its proper divisors (4882415077).

20343396025 is an equidigital number, since it uses as much as digits as its factorization.

20343396025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813735851 (or 813735846 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 37.

The spelling of 20343396025 in words is "twenty billion, three hundred forty-three million, three hundred ninety-six thousand, twenty-five".