261325223 has 4 divisors (see below), whose sum is σ = 262255488. Its totient is φ = 260394960.

The previous prime is 261325189. The next prime is 261325231. The reversal of 261325223 is 322523162.

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 261325223 - 2⁸ = 261324967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261325192 and 261325201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261325243) 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, 464711 + ... + 465272.

It is an arithmetic number, because the mean of its divisors is an integer number (65563872).

Almost surely, 2^261325223 is an apocalyptic number.

261325223 is a deficient number, since it is larger than the sum of its proper divisors (930265).

261325223 is an equidigital number, since it uses as much as digits as its factorization.

261325223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930264.

The product of its digits is 4320, while the sum is 26.

The square root of 261325223 is about 16165.5566869811. The cubic root of 261325223 is about 639.3329826379.

Adding to 261325223 its reverse (322523162), we get a palindrome (583848385).

The spelling of 261325223 in words is "two hundred sixty-one million, three hundred twenty-five thousand, two hundred twenty-three".