20525675 has 6 divisors (see below), whose sum is σ = 25451868. Its totient is φ = 16420520.

The previous prime is 20525671. The next prime is 20525677. The reversal of 20525675 is 57652502.

It is not a de Polignac number, because 20525675 - 2² = 20525671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20525671) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 410489 + ... + 410538.

It is an arithmetic number, because the mean of its divisors is an integer number (4241978).

Almost surely, 2^20525675 is an apocalyptic number.

20525675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20525675 is a deficient number, since it is larger than the sum of its proper divisors (4926193).

20525675 is an equidigital number, since it uses as much as digits as its factorization.

20525675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821037 (or 821032 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 20525675 is about 4530.5270112869. The cubic root of 20525675 is about 273.7993940742.

The spelling of 20525675 in words is "twenty million, five hundred twenty-five thousand, six hundred seventy-five".