20534454525 has 48 divisors (see below), whose sum is σ = 36764174720. Its totient is φ = 10053331200.

The previous prime is 20534454469. The next prime is 20534454539. The reversal of 20534454525 is 52545443502.

It is not a de Polignac number, because 20534454525 - 2¹² = 20534450429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118296 + ... + 234654.

Almost surely, 2^20534454525 is an apocalyptic number.

20534454525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20534454525 is a deficient number, since it is larger than the sum of its proper divisors (16229720195).

20534454525 is a wasteful number, since it uses less digits than its factorization.

20534454525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116566 (or 116561 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 39.

The spelling of 20534454525 in words is "twenty billion, five hundred thirty-four million, four hundred fifty-four thousand, five hundred twenty-five".