20542003525 has 12 divisors (see below), whose sum is σ = 26293765504. Its totient is φ = 15903486000.

The previous prime is 20542003513. The next prime is 20542003529. The reversal of 20542003525 is 52530024502.

It is a de Polignac number, because none of the positive numbers 2^k-20542003525 is a prime.

It is a super-2 number, since 2×20542003525² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20542003493 and 20542003502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542003529) 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, 13252131 + ... + 13253680.

Almost surely, 2^20542003525 is an apocalyptic number.

20542003525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20542003525 is a deficient number, since it is larger than the sum of its proper divisors (5751761979).

20542003525 is a wasteful number, since it uses less digits than its factorization.

20542003525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26505852 (or 26505847 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The spelling of 20542003525 in words is "twenty billion, five hundred forty-two million, three thousand, five hundred twenty-five".