225641461 has 4 divisors (see below), whose sum is σ = 229009312. Its totient is φ = 222273612.

The previous prime is 225641443. The next prime is 225641519. The reversal of 225641461 is 164146522.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 164146522 = 2 ⋅82073261.

It is a cyclic number.

It is not a de Polignac number, because 225641461 - 2¹¹ = 225639413 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 (225641401) 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, 1683825 + ... + 1683958.

It is an arithmetic number, because the mean of its divisors is an integer number (57252328).

Almost surely, 2^225641461 is an apocalyptic number.

It is an amenable number.

225641461 is a deficient number, since it is larger than the sum of its proper divisors (3367851).

225641461 is an equidigital number, since it uses as much as digits as its factorization.

225641461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367850.

The product of its digits is 11520, while the sum is 31.

The square root of 225641461 is about 15021.3668153068. The cubic root of 225641461 is about 608.7976504604.

Adding to 225641461 its reverse (164146522), we get a palindrome (389787983).

It can be divided in two parts, 22564 and 1461, that added together give a square (24025 = 155²).

The spelling of 225641461 in words is "two hundred twenty-five million, six hundred forty-one thousand, four hundred sixty-one".