225711401 has 8 divisors (see below), whose sum is σ = 229081800. Its totient is φ = 222348672.

The previous prime is 225711389. The next prime is 225711463. The reversal of 225711401 is 104117522.

It can be written as a sum of positive squares in 4 ways, for example, as 32501401 + 193210000 = 5701^2 + 13900^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225711401 - 2²² = 221517097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225711481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87275 + ... + 89823.

It is an arithmetic number, because the mean of its divisors is an integer number (28635225).

Almost surely, 2^225711401 is an apocalyptic number.

It is an amenable number.

225711401 is a deficient number, since it is larger than the sum of its proper divisors (3370399).

225711401 is a wasteful number, since it uses less digits than its factorization.

225711401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 225711401 is about 15023.6946521154. The cubic root of 225711401 is about 608.8605450911.

Adding to 225711401 its reverse (104117522), we get a palindrome (329828923).

The spelling of 225711401 in words is "two hundred twenty-five million, seven hundred eleven thousand, four hundred one".