20425613567 has 24 divisors (see below), whose sum is σ = 22184807040. Its totient is φ = 18792421200.

The previous prime is 20425613561. The next prime is 20425613569. The reversal of 20425613567 is 76531652402.

It is a de Polignac number, because none of the positive numbers 2^k-20425613567 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 (20425613561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2774942 + ... + 2782292.

It is an arithmetic number, because the mean of its divisors is an integer number (924366960).

Almost surely, 2^20425613567 is an apocalyptic number.

20425613567 is a deficient number, since it is larger than the sum of its proper divisors (1759193473).

20425613567 is a wasteful number, since it uses less digits than its factorization.

20425613567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7611 (or 7592 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 20425613567 in words is "twenty billion, four hundred twenty-five million, six hundred thirteen thousand, five hundred sixty-seven".