20310454556225 has 12 divisors (see below), whose sum is σ = 26279962070016. Its totient is φ = 15541913051280.

The previous prime is 20310454556213. The next prime is 20310454556243. The reversal of 20310454556225 is 52265545401302.

It is a happy number.

It is not a de Polignac number, because 20310454556225 - 2¹⁴ = 20310454539841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17661264257 + ... + 17661265406.

It is an arithmetic number, because the mean of its divisors is an integer number (2189996839168).

Almost surely, 2^{20310454556225} is an apocalyptic number.

20310454556225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20310454556225 is a deficient number, since it is larger than the sum of its proper divisors (5969507513791).

20310454556225 is a wasteful number, since it uses less digits than its factorization.

20310454556225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35322529696 (or 35322529691 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 44.

Adding to 20310454556225 its reverse (52265545401302), we get a palindrome (72575999957527).

The spelling of 20310454556225 in words is "twenty trillion, three hundred ten billion, four hundred fifty-four million, five hundred fifty-six thousand, two hundred twenty-five".