225858137 has 12 divisors (see below), whose sum is σ = 238331940. Its totient is φ = 214001568.

The previous prime is 225858133. The next prime is 225858151. The reversal of 225858137 is 731858522.

It can be written as a sum of positive squares in 2 ways, for example, as 170668096 + 55190041 = 13064^2 + 7429^2 .

It is not a de Polignac number, because 225858137 - 2² = 225858133 is a prime.

It is a super-2 number, since 2×225858137² = 102023796098221538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225858094 and 225858103.

It is not an unprimeable number, because it can be changed into a prime (225858133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55703 + ... + 59619.

It is an arithmetic number, because the mean of its divisors is an integer number (19860995).

Almost surely, 2^225858137 is an apocalyptic number.

It is an amenable number.

225858137 is a deficient number, since it is larger than the sum of its proper divisors (12473803).

225858137 is a wasteful number, since it uses less digits than its factorization.

225858137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4072 (or 4049 counting only the distinct ones).

The product of its digits is 134400, while the sum is 41.

The square root of 225858137 is about 15028.5773445127. The cubic root of 225858137 is about 608.9924575053.

The spelling of 225858137 in words is "two hundred twenty-five million, eight hundred fifty-eight thousand, one hundred thirty-seven".