20425710136 has 32 divisors (see below), whose sum is σ = 41421285360. Its totient is φ = 9386779392.

The previous prime is 20425710131. The next prime is 20425710191. The reversal of 20425710136 is 63101752402.

It is a junction number, because it is equal to n+sod(n) for n = 20425710098 and 20425710107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425710131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397230 + ... + 445693.

Almost surely, 2^20425710136 is an apocalyptic number.

20425710136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20425710136 is an abundant number, since it is smaller than the sum of its proper divisors (20995575224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20425710136 is a wasteful number, since it uses less digits than its factorization.

20425710136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843175 (or 843171 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 20425710136 in words is "twenty billion, four hundred twenty-five million, seven hundred ten thousand, one hundred thirty-six".