225530499261 has 4 divisors (see below), whose sum is σ = 300707332352. Its totient is φ = 150353666172.

The previous prime is 225530499253. The next prime is 225530499283. The reversal of 225530499261 is 162994035522.

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 not a de Polignac number, because 225530499261 - 2³ = 225530499253 is a prime.

It is a super-2 number, since 2×225530499261² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225530499261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225530499211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37588416541 + ... + 37588416546.

It is an arithmetic number, because the mean of its divisors is an integer number (75176833088).

Almost surely, 2^225530499261 is an apocalyptic number.

It is an amenable number.

225530499261 is a deficient number, since it is larger than the sum of its proper divisors (75176833091).

225530499261 is an equidigital number, since it uses as much as digits as its factorization.

225530499261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75176833090.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 225530499261 in words is "two hundred twenty-five billion, five hundred thirty million, four hundred ninety-nine thousand, two hundred sixty-one".