20320310025 has 42 divisors (see below), whose sum is σ = 37778528510. Its totient is φ = 10837488960.

The previous prime is 20320309993. The next prime is 20320310029. The reversal of 20320310025 is 52001302302.

It can be written as a sum of positive squares in 3 ways, for example, as 50808384 + 20269501641 = 7128^2 + 142371^2 .

It is not a de Polignac number, because 20320310025 - 2⁵ = 20320309993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20320310029) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 539260 + ... + 575709.

Almost surely, 2^20320310025 is an apocalyptic number.

20320310025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20320310025 is a deficient number, since it is larger than the sum of its proper divisors (17458218485).

20320310025 is an equidigital number, since it uses as much as digits as its factorization.

20320310025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114997 (or 1114977 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 20320310025 its reverse (52001302302), we get a palindrome (72321612327).

The spelling of 20320310025 in words is "twenty billion, three hundred twenty million, three hundred ten thousand, twenty-five".