20125536364251 has 16 divisors (see below), whose sum is σ = 29816066855200. Its totient is φ = 13416818400864.

The previous prime is 20125536364217. The next prime is 20125536364253. The reversal of 20125536364251 is 15246363552102.

20125536364251 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 5 + 5 + 3 + 636 + 4 + 2 + 5 + 1 = 666.

It is not a de Polignac number, because 20125536364251 - 2⁷ = 20125536364123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20125536364197 and 20125536364206.

It is not an unprimeable number, because it can be changed into a prime (20125536364253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3915016 + ... + 7455093.

It is an arithmetic number, because the mean of its divisors is an integer number (1863504178450).

Almost surely, 2^{20125536364251} is an apocalyptic number.

20125536364251 is a deficient number, since it is larger than the sum of its proper divisors (9690530490949).

20125536364251 is a wasteful number, since it uses less digits than its factorization.

20125536364251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11435675 (or 11435669 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 20125536364251 in words is "twenty trillion, one hundred twenty-five billion, five hundred thirty-six million, three hundred sixty-four thousand, two hundred fifty-one".