20425426253 has 8 divisors (see below), whose sum is σ = 21715630848. Its totient is φ = 19168733584.

The previous prime is 20425426211. The next prime is 20425426261. The reversal of 20425426253 is 35262452402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20425426253 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 (20425423253) 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, 8376725 + ... + 8379162.

It is an arithmetic number, because the mean of its divisors is an integer number (2714453856).

Almost surely, 2^20425426253 is an apocalyptic number.

20425426253 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20425426253 is a deficient number, since it is larger than the sum of its proper divisors (1290204595).

20425426253 is a wasteful number, since it uses less digits than its factorization.

20425426253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16755963.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 20425426253 its reverse (35262452402), we get a palindrome (55687878655).

The spelling of 20425426253 in words is "twenty billion, four hundred twenty-five million, four hundred twenty-six thousand, two hundred fifty-three".