20051533525 has 24 divisors (see below), whose sum is σ = 25048496000. Its totient is φ = 15922526400.

The previous prime is 20051533517. The next prime is 20051533547. The reversal of 20051533525 is 52533515002.

It is not a de Polignac number, because 20051533525 - 2³ = 20051533517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2179435 + ... + 2188615.

Almost surely, 2^20051533525 is an apocalyptic number.

20051533525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20051533525 is a deficient number, since it is larger than the sum of its proper divisors (4996962475).

20051533525 is a wasteful number, since it uses less digits than its factorization.

20051533525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9829 (or 9824 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 31.

The spelling of 20051533525 in words is "twenty billion, fifty-one million, five hundred thirty-three thousand, five hundred twenty-five".