20526251055 has 8 divisors (see below), whose sum is σ = 32842001712. Its totient is φ = 10947333888.

The previous prime is 20526251051. The next prime is 20526251071. The reversal of 20526251055 is 55015262502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20526251055 - 2² = 20526251051 is a prime.

It is a super-2 number, since 2×20526251055² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20526251051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684208354 + ... + 684208383.

It is an arithmetic number, because the mean of its divisors is an integer number (4105250214).

Almost surely, 2^20526251055 is an apocalyptic number.

20526251055 is a deficient number, since it is larger than the sum of its proper divisors (12315750657).

20526251055 is a wasteful number, since it uses less digits than its factorization.

20526251055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368416745.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 20526251055 in words is "twenty billion, five hundred twenty-six million, two hundred fifty-one thousand, fifty-five".