261225232 has 20 divisors (see below), whose sum is σ = 507111516. Its totient is φ = 130357760.

The previous prime is 261225229. The next prime is 261225233. The reversal of 261225232 is 232522162.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 175403536 + 85821696 = 13244^2 + 9264^2 .

It is a junction number, because it is equal to n+sod(n) for n = 261225197 and 261225206.

It is not an unprimeable number, because it can be changed into a prime (261225233) 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, 7333 + ... + 24004.

Almost surely, 2^261225232 is an apocalyptic number.

It is an amenable number.

261225232 is a deficient number, since it is larger than the sum of its proper divisors (245886284).

261225232 is a wasteful number, since it uses less digits than its factorization.

261225232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31866 (or 31860 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 261225232 is about 16162.4636735864. The cubic root of 261225232 is about 639.2514294697.

Adding to 261225232 its reverse (232522162), we get a palindrome (493747394).

The spelling of 261225232 in words is "two hundred sixty-one million, two hundred twenty-five thousand, two hundred thirty-two".