20525099 has 8 divisors (see below), whose sum is σ = 23536128. Its totient is φ = 17533800.

The previous prime is 20525093. The next prime is 20525101. The reversal of 20525099 is 99052502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20525099 - 2¹⁶ = 20459563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20525093) 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 in 7 ways as a sum of consecutive naturals, for example, 2627 + ... + 6924.

It is an arithmetic number, because the mean of its divisors is an integer number (2942016).

Almost surely, 2^20525099 is an apocalyptic number.

20525099 is a deficient number, since it is larger than the sum of its proper divisors (3011029).

20525099 is an equidigital number, since it uses as much as digits as its factorization.

20525099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9865.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 20525099 is about 4530.4634420774. The cubic root of 20525099 is about 273.7968328929.

The spelling of 20525099 in words is "twenty million, five hundred twenty-five thousand, ninety-nine".