225861437 has 8 divisors (see below), whose sum is σ = 229299840. Its totient is φ = 222430320.

The previous prime is 225861409. The next prime is 225861463. The reversal of 225861437 is 734168522.

It is a happy number.

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 225861437 - 2¹⁰ = 225860413 is a prime.

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 225861437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225861487) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 119264 + ... + 121142.

It is an arithmetic number, because the mean of its divisors is an integer number (28662480).

Almost surely, 2^225861437 is an apocalyptic number.

It is an amenable number.

225861437 is a deficient number, since it is larger than the sum of its proper divisors (3438403).

225861437 is a wasteful number, since it uses less digits than its factorization.

225861437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3643.

The product of its digits is 80640, while the sum is 38.

The square root of 225861437 is about 15028.6871349430. The cubic root of 225861437 is about 608.9954234752.

The spelling of 225861437 in words is "two hundred twenty-five million, eight hundred sixty-one thousand, four hundred thirty-seven".