20850481155125 has 32 divisors (see below), whose sum is σ = 26341584272640. Its totient is φ = 16475971627200.

The previous prime is 20850481155047. The next prime is 20850481155139. The reversal of 20850481155125 is 52155118405802.

It is not a de Polignac number, because 20850481155125 - 2²² = 20850476960821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20850481155125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2926814 + ... + 7089936.

It is an arithmetic number, because the mean of its divisors is an integer number (823174508520).

Almost surely, 2^{20850481155125} is an apocalyptic number.

20850481155125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20850481155125 is a deficient number, since it is larger than the sum of its proper divisors (5491103117515).

20850481155125 is a wasteful number, since it uses less digits than its factorization.

20850481155125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163630 (or 4163620 counting only the distinct ones).

The product of its (nonzero) digits is 640000, while the sum is 47.

The spelling of 20850481155125 in words is "twenty trillion, eight hundred fifty billion, four hundred eighty-one million, one hundred fifty-five thousand, one hundred twenty-five".