20103849136225 has 12 divisors (see below), whose sum is σ = 24928857246780. Its totient is φ = 16083024910400.

The previous prime is 20103849136193. The next prime is 20103849136237. The reversal of 20103849136225 is 52263194830102.

It can be written as a sum of positive squares in 6 ways, for example, as 2401331442129 + 17702517694096 = 1549623^2 + 4207436^2 .

It is not a de Polignac number, because 20103849136225 - 2⁵ = 20103849136193 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7247331 + ... + 9629719.

It is an arithmetic number, because the mean of its divisors is an integer number (2077404770565).

Almost surely, 2^{20103849136225} is an apocalyptic number.

20103849136225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20103849136225 is a deficient number, since it is larger than the sum of its proper divisors (4825008110555).

20103849136225 is a wasteful number, since it uses less digits than its factorization.

20103849136225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719940 (or 2719935 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 20103849136225 in words is "twenty trillion, one hundred three billion, eight hundred forty-nine million, one hundred thirty-six thousand, two hundred twenty-five".