20254523105 has 16 divisors (see below), whose sum is σ = 24709622400. Its totient is φ = 15934968192.

The previous prime is 20254523063. The next prime is 20254523123. The reversal of 20254523105 is 50132545202.

It is a cyclic number.

It is not a de Polignac number, because 20254523105 - 2¹⁰ = 20254522081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150197 + ... + 251133.

It is an arithmetic number, because the mean of its divisors is an integer number (1544351400).

Almost surely, 2^20254523105 is an apocalyptic number.

It is an amenable number.

20254523105 is a deficient number, since it is larger than the sum of its proper divisors (4455099295).

20254523105 is a wasteful number, since it uses less digits than its factorization.

20254523105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101608.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 20254523105 in words is "twenty billion, two hundred fifty-four million, five hundred twenty-three thousand, one hundred five".