20102425055 has 4 divisors (see below), whose sum is σ = 24122910072. Its totient is φ = 16081940040.

The previous prime is 20102425019. The next prime is 20102425111. The reversal of 20102425055 is 55052420102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20102425055 - 2¹⁰ = 20102424031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2010242501 + ... + 2010242510.

It is an arithmetic number, because the mean of its divisors is an integer number (6030727518).

Almost surely, 2^20102425055 is an apocalyptic number.

20102425055 is a deficient number, since it is larger than the sum of its proper divisors (4020485017).

20102425055 is an equidigital number, since it uses as much as digits as its factorization.

20102425055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020485016.

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 20102425055 its reverse (55052420102), we get a palindrome (75154845157).

The spelling of 20102425055 in words is "twenty billion, one hundred two million, four hundred twenty-five thousand, fifty-five".