20525067 has 12 divisors (see below), whose sum is σ = 29746704. Its totient is φ = 13637520.

The previous prime is 20525053. The next prime is 20525077. The reversal of 20525067 is 76052502.

It is not a de Polignac number, because 20525067 - 2⁸ = 20524811 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20525067.

It is not an unprimeable number, because it can be changed into a prime (20525017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 868 + ... + 6465.

It is an arithmetic number, because the mean of its divisors is an integer number (2478892).

Almost surely, 2^20525067 is an apocalyptic number.

20525067 is a deficient number, since it is larger than the sum of its proper divisors (9221637).

20525067 is a wasteful number, since it uses less digits than its factorization.

20525067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650 (or 7647 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 20525067 is about 4530.4599104285. The cubic root of 20525067 is about 273.7966906036.

Adding to 20525067 its reverse (76052502), we get a palindrome (96577569).

The spelling of 20525067 in words is "twenty million, five hundred twenty-five thousand, sixty-seven".