20265801 has 4 divisors (see below), whose sum is σ = 27021072. Its totient is φ = 13510532.

The previous prime is 20265797. The next prime is 20265821. The reversal of 20265801 is 10856202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20265801 - 2² = 20265797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20265821) 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 3 ways as a sum of consecutive naturals, for example, 3377631 + ... + 3377636.

It is an arithmetic number, because the mean of its divisors is an integer number (6755268).

Almost surely, 2^20265801 is an apocalyptic number.

It is an amenable number.

20265801 is a deficient number, since it is larger than the sum of its proper divisors (6755271).

20265801 is an equidigital number, since it uses as much as digits as its factorization.

20265801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6755270.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 20265801 is about 4501.7553243152. The cubic root of 20265801 is about 272.6389651166.

The spelling of 20265801 in words is "twenty million, two hundred sixty-five thousand, eight hundred one".