20363825 has 12 divisors (see below), whose sum is σ = 25368540. Its totient is φ = 16215360.

The previous prime is 20363743. The next prime is 20363851. The reversal of 20363825 is 52836302.

It can be written as a sum of positive squares in 6 ways, for example, as 185761 + 20178064 = 431^2 + 4492^2 .

It is not a de Polignac number, because 20363825 - 2²⁰ = 19315249 is a prime.

It is a super-3 number, since 3×20363825³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3947 + ... + 7503.

It is an arithmetic number, because the mean of its divisors is an integer number (2114045).

Almost surely, 2^20363825 is an apocalyptic number.

20363825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20363825 is a deficient number, since it is larger than the sum of its proper divisors (5004715).

20363825 is a wasteful number, since it uses less digits than its factorization.

20363825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796 (or 3791 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 20363825 is about 4512.6294995269. The cubic root of 20363825 is about 273.0778356421.

The spelling of 20363825 in words is "twenty million, three hundred sixty-three thousand, eight hundred twenty-five".