20002515025 has 12 divisors (see below), whose sum is σ = 25043928832. Its totient is φ = 15846650640.

The previous prime is 20002515023. The next prime is 20002515077. The reversal of 20002515025 is 52051520002.

It is not a de Polignac number, because 20002515025 - 2¹ = 20002515023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002514987 and 20002515005.

It is not an unprimeable number, because it can be changed into a prime (20002515023) 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, 3881409 + ... + 3886558.

Almost surely, 2^20002515025 is an apocalyptic number.

20002515025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20002515025 is a deficient number, since it is larger than the sum of its proper divisors (5041413807).

20002515025 is a wasteful number, since it uses less digits than its factorization.

20002515025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7768080 (or 7768075 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The spelling of 20002515025 in words is "twenty billion, two million, five hundred fifteen thousand, twenty-five".