20556225151 has 12 divisors (see below), whose sum is σ = 26086193640. Its totient is φ = 16017837360.

The previous prime is 20556225133. The next prime is 20556225167. The reversal of 20556225151 is 15152265502.

It is not a de Polignac number, because 20556225151 - 2¹³ = 20556216959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20556225101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19068316 + ... + 19069393.

It is an arithmetic number, because the mean of its divisors is an integer number (2173849470).

Almost surely, 2^20556225151 is an apocalyptic number.

20556225151 is a deficient number, since it is larger than the sum of its proper divisors (5529968489).

20556225151 is a wasteful number, since it uses less digits than its factorization.

20556225151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38137734 (or 38137727 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 20556225151 in words is "twenty billion, five hundred fifty-six million, two hundred twenty-five thousand, one hundred fifty-one".