20525444104155 has 32 divisors (see below), whose sum is σ = 33117551198208. Its totient is φ = 10854883632000.

The previous prime is 20525444104127. The next prime is 20525444104163. The reversal of 20525444104155 is 55140144452502.

It is not a de Polignac number, because 20525444104155 - 2³⁴ = 20508264234971 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6873051 + ... + 9396260.

It is an arithmetic number, because the mean of its divisors is an integer number (1034923474944).

Almost surely, 2^{20525444104155} is an apocalyptic number.

20525444104155 is a deficient number, since it is larger than the sum of its proper divisors (12592107094053).

20525444104155 is a wasteful number, since it uses less digits than its factorization.

20525444104155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16270027.

The product of its (nonzero) digits is 640000, while the sum is 42.

Adding to 20525444104155 its reverse (55140144452502), we get a palindrome (75665588556657).

The spelling of 20525444104155 in words is "twenty trillion, five hundred twenty-five billion, four hundred forty-four million, one hundred four thousand, one hundred fifty-five".