20525956 has 18 divisors (see below), whose sum is σ = 39483710. Its totient is φ = 9329760.

The previous prime is 20525941. The next prime is 20525971. The reversal of 20525956 is 65952502.

It is an interprime number because it is at equal distance from previous prime (20525941) and next prime (20525971).

It can be written as a sum of positive squares in only one way, i.e., 18783556 + 1742400 = 4334^2 + 1320^2 .

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 20721 + ... + 21688.

Almost surely, 2^20525956 is an apocalyptic number.

It is an amenable number.

20525956 is a deficient number, since it is larger than the sum of its proper divisors (18957754).

20525956 is a wasteful number, since it uses less digits than its factorization.

20525956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42435 (or 42422 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 20525956 is about 4530.5580230254. The cubic root of 20525956 is about 273.8006435220.

It can be divided in two parts, 2052 and 5956, that added together give a palindrome (8008).

The spelling of 20525956 in words is "twenty million, five hundred twenty-five thousand, nine hundred fifty-six".