20425426264 has 8 divisors (see below), whose sum is σ = 38297674260. Its totient is φ = 10212713128.

The previous prime is 20425426261. The next prime is 20425426297. The reversal of 20425426264 is 46262452402.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20425426264² (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 (20425426261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276589134 + ... + 1276589149.

Almost surely, 2^20425426264 is an apocalyptic number.

It is an amenable number.

20425426264 is a deficient number, since it is larger than the sum of its proper divisors (17872247996).

20425426264 is a wasteful number, since it uses less digits than its factorization.

20425426264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553178289 (or 2553178285 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 20425426264 its reverse (46262452402), we get a palindrome (66687878666).

The spelling of 20425426264 in words is "twenty billion, four hundred twenty-five million, four hundred twenty-six thousand, two hundred sixty-four".