225191539 has 4 divisors (see below), whose sum is σ = 225227056. Its totient is φ = 225156024.

The previous prime is 225191521. The next prime is 225191543. The reversal of 225191539 is 935191522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225191539 - 2⁵ = 225191507 is a prime.

It is a super-2 number, since 2×225191539² = 101422458474377042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225191498 and 225191507.

It is not an unprimeable number, because it can be changed into a prime (225191579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5364 + ... + 21889.

It is an arithmetic number, because the mean of its divisors is an integer number (56306764).

Almost surely, 2^225191539 is an apocalyptic number.

225191539 is a deficient number, since it is larger than the sum of its proper divisors (35517).

225191539 is an equidigital number, since it uses as much as digits as its factorization.

225191539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35516.

The product of its digits is 24300, while the sum is 37.

The square root of 225191539 is about 15006.3832751266. The cubic root of 225191539 is about 608.3927400711.

The spelling of 225191539 in words is "two hundred twenty-five million, one hundred ninety-one thousand, five hundred thirty-nine".