20525061 has 16 divisors (see below), whose sum is σ = 28283904. Its totient is φ = 13231344.

The previous prime is 20525053. The next prime is 20525077. The reversal of 20525061 is 16052502.

It is not a de Polignac number, because 20525061 - 2³ = 20525053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13060 + ... + 14546.

It is an arithmetic number, because the mean of its divisors is an integer number (1767744).

Almost surely, 2^20525061 is an apocalyptic number.

It is an amenable number.

20525061 is a deficient number, since it is larger than the sum of its proper divisors (7758843).

20525061 is a wasteful number, since it uses less digits than its factorization.

20525061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 20525061 is about 4530.4592482440. The cubic root of 20525061 is about 273.7966639244.

Adding to 20525061 its reverse (16052502), we get a palindrome (36577563).

The spelling of 20525061 in words is "twenty million, five hundred twenty-five thousand, sixty-one".