20047525497 has 12 divisors (see below), whose sum is σ = 28974602800. Its totient is φ = 13357140408.

The previous prime is 20047525493. The next prime is 20047525513. The reversal of 20047525497 is 79452574002.

It is not a de Polignac number, because 20047525497 - 2² = 20047525493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20047525493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 640243 + ... + 670824.

Almost surely, 2^20047525497 is an apocalyptic number.

It is an amenable number.

20047525497 is a deficient number, since it is larger than the sum of its proper divisors (8927077303).

20047525497 is a wasteful number, since it uses less digits than its factorization.

20047525497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312772 (or 1312769 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 20047525497 in words is "twenty billion, forty-seven million, five hundred twenty-five thousand, four hundred ninety-seven".