20548715025 has 48 divisors (see below), whose sum is σ = 35236855808. Its totient is φ = 10555272000.

The previous prime is 20548715021. The next prime is 20548715051. The reversal of 20548715025 is 52051784502.

It is not a de Polignac number, because 20548715025 - 2² = 20548715021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20548715021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 469632 + ... + 511518.

Almost surely, 2^20548715025 is an apocalyptic number.

20548715025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20548715025 is a deficient number, since it is larger than the sum of its proper divisors (14688140783).

20548715025 is a wasteful number, since it uses less digits than its factorization.

20548715025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42142 (or 42137 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 39.

The spelling of 20548715025 in words is "twenty billion, five hundred forty-eight million, seven hundred fifteen thousand, twenty-five".