225361565 has 64 divisors (see below), whose sum is σ = 341832960. Its totient is φ = 140175360.

The previous prime is 225361553. The next prime is 225361573. The reversal of 225361565 is 565163522.

It is not a de Polignac number, because 225361565 - 2¹² = 225357469 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 719849 + ... + 720161.

It is an arithmetic number, because the mean of its divisors is an integer number (5341140).

Almost surely, 2^225361565 is an apocalyptic number.

It is an amenable number.

225361565 is a deficient number, since it is larger than the sum of its proper divisors (116471395).

225361565 is a wasteful number, since it uses less digits than its factorization.

225361565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414.

The product of its digits is 54000, while the sum is 35.

The square root of 225361565 is about 15012.0473287290. The cubic root of 225361565 is about 608.5458194769.

The spelling of 225361565 in words is "two hundred twenty-five million, three hundred sixty-one thousand, five hundred sixty-five".