20700825 has 12 divisors (see below), whose sum is σ = 34225488. Its totient is φ = 11040400.

The previous prime is 20700817. The next prime is 20700833. The reversal of 20700825 is 52800702.

It is an interprime number because it is at equal distance from previous prime (20700817) and next prime (20700833).

It is not a de Polignac number, because 20700825 - 2³ = 20700817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20700795 and 20700804.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137931 + ... + 138080.

It is an arithmetic number, because the mean of its divisors is an integer number (2852124).

Almost surely, 2^20700825 is an apocalyptic number.

20700825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20700825 is a deficient number, since it is larger than the sum of its proper divisors (13524663).

20700825 is a wasteful number, since it uses less digits than its factorization.

20700825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276024 (or 276019 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 20700825 is about 4549.8159303427. The cubic root of 20700825 is about 274.5759856794.

The spelling of 20700825 in words is "twenty million, seven hundred thousand, eight hundred twenty-five".