20562863825 has 24 divisors (see below), whose sum is σ = 30854668032. Its totient is φ = 13270821120.

The previous prime is 20562863819. The next prime is 20562863831. The reversal of 20562863825 is 52836826502.

It is an interprime number because it is at equal distance from previous prime (20562863819) and next prime (20562863831).

It is not a de Polignac number, because 20562863825 - 2⁴ = 20562863809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20562863825.

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, 3452969 + ... + 3458918.

It is an arithmetic number, because the mean of its divisors is an integer number (1285611168).

Almost surely, 2^20562863825 is an apocalyptic number.

20562863825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20562863825 is a deficient number, since it is larger than the sum of its proper divisors (10291804207).

20562863825 is a wasteful number, since it uses less digits than its factorization.

20562863825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6911921 (or 6911916 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 20562863825 in words is "twenty billion, five hundred sixty-two million, eight hundred sixty-three thousand, eight hundred twenty-five".