20525836 has 6 divisors (see below), whose sum is σ = 35920220. Its totient is φ = 10262916.

The previous prime is 20525831. The next prime is 20525839. The reversal of 20525836 is 63852502.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20525798 and 20525807.

It is not an unprimeable number, because it can be changed into a prime (20525831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2565726 + ... + 2565733.

Almost surely, 2^20525836 is an apocalyptic number.

It is an amenable number.

20525836 is a deficient number, since it is larger than the sum of its proper divisors (15394384).

20525836 is a wasteful number, since it uses less digits than its factorization.

20525836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5131463 (or 5131461 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 20525836 is about 4530.5447796043. The cubic root of 20525836 is about 273.8001099514.

The spelling of 20525836 in words is "twenty million, five hundred twenty-five thousand, eight hundred thirty-six".