225986137 has 8 divisors (see below), whose sum is σ = 249306120. Its totient is φ = 203514240.

The previous prime is 225986129. The next prime is 225986141. The reversal of 225986137 is 731689522.

225986137 = 1294² + 1295² + ... + 1416².

225986137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5285401 + 220700736 = 2299^2 + 14856^2 .

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 225986137 - 2³ = 225986129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225986093 and 225986102.

It is not an unprimeable number, because it can be changed into a prime (225986177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211462 + ... + 212527.

It is an arithmetic number, because the mean of its divisors is an integer number (31163265).

Almost surely, 2^225986137 is an apocalyptic number.

It is an amenable number.

225986137 is a deficient number, since it is larger than the sum of its proper divisors (23319983).

225986137 is a wasteful number, since it uses less digits than its factorization.

225986137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424043.

The product of its digits is 181440, while the sum is 43.

The square root of 225986137 is about 15032.8352947806. The cubic root of 225986137 is about 609.1074800213.

The spelling of 225986137 in words is "two hundred twenty-five million, nine hundred eighty-six thousand, one hundred thirty-seven".