20255747524 has 12 divisors (see below), whose sum is σ = 35625688000. Its totient is φ = 10076979528.

The previous prime is 20255747521. The next prime is 20255747573. The reversal of 20255747524 is 42574755202.

It is not an unprimeable number, because it can be changed into a prime (20255747521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12722664 + ... + 12724255.

Almost surely, 2^20255747524 is an apocalyptic number.

It is an amenable number.

20255747524 is a deficient number, since it is larger than the sum of its proper divisors (15369940476).

20255747524 is a wasteful number, since it uses less digits than its factorization.

20255747524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25447122 (or 25447120 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 43.

The spelling of 20255747524 in words is "twenty billion, two hundred fifty-five million, seven hundred forty-seven thousand, five hundred twenty-four".