20265895 has 16 divisors (see below), whose sum is σ = 26554752. Its totient is φ = 14757120.

The previous prime is 20265893. The next prime is 20265929. The reversal of 20265895 is 59856202.

It is a happy number.

It is not a de Polignac number, because 20265895 - 2¹ = 20265893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20265893) 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, 2610 + ... + 6880.

It is an arithmetic number, because the mean of its divisors is an integer number (1659672).

Almost surely, 2^20265895 is an apocalyptic number.

20265895 is a deficient number, since it is larger than the sum of its proper divisors (6288857).

20265895 is a wasteful number, since it uses less digits than its factorization.

20265895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 20265895 is about 4501.7657646750. The cubic root of 20265895 is about 272.6393866482.

It can be divided in two parts, 2026 and 5895, that added together give a square (7921 = 89²).

The spelling of 20265895 in words is "twenty million, two hundred sixty-five thousand, eight hundred ninety-five".