20315456422325 has 6 divisors (see below), whose sum is σ = 25191165963714. Its totient is φ = 16252365137840.

The previous prime is 20315456422321. The next prime is 20315456422333. The reversal of 20315456422325 is 52322465451302.

It can be written as a sum of positive squares in 3 ways, for example, as 60362101969 + 20255094320356 = 245687^2 + 4500566^2 .

It is not a de Polignac number, because 20315456422325 - 2² = 20315456422321 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315456422321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 406309128422 + ... + 406309128471.

It is an arithmetic number, because the mean of its divisors is an integer number (4198527660619).

Almost surely, 2^{20315456422325} is an apocalyptic number.

20315456422325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20315456422325 is a deficient number, since it is larger than the sum of its proper divisors (4875709541389).

20315456422325 is an equidigital number, since it uses as much as digits as its factorization.

20315456422325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812618256903 (or 812618256898 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 20315456422325 in words is "twenty trillion, three hundred fifteen billion, four hundred fifty-six million, four hundred twenty-two thousand, three hundred twenty-five".