20523013025 has 24 divisors (see below), whose sum is σ = 25790908800. Its totient is φ = 16197854400.

The previous prime is 20523013019. The next prime is 20523013031. The reversal of 20523013025 is 52031032502.

It is an interprime number because it is at equal distance from previous prime (20523013019) and next prime (20523013031).

It is a de Polignac number, because none of the positive numbers 2^k-20523013025 is a prime.

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, 3115235 + ... + 3121815.

It is an arithmetic number, because the mean of its divisors is an integer number (1074621200).

Almost surely, 2^20523013025 is an apocalyptic number.

20523013025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20523013025 is a deficient number, since it is larger than the sum of its proper divisors (5267895775).

20523013025 is a wasteful number, since it uses less digits than its factorization.

20523013025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8249 (or 8244 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 20523013025 its reverse (52031032502), we get a palindrome (72554045527).

The spelling of 20523013025 in words is "twenty billion, five hundred twenty-three million, thirteen thousand, twenty-five".