225856137 has 16 divisors (see below), whose sum is σ = 326491200. Its totient is φ = 138052032.

The previous prime is 225856117. The next prime is 225856157. The reversal of 225856137 is 731658522.

225856137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (225856117) and next prime (225856157).

It is not a de Polignac number, because 225856137 - 2⁶ = 225856073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 225856095 and 225856104.

It is not an unprimeable number, because it can be changed into a prime (225856117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13623 + ... + 25244.

It is an arithmetic number, because the mean of its divisors is an integer number (20405700).

Almost surely, 2^225856137 is an apocalyptic number.

It is an amenable number.

225856137 is a deficient number, since it is larger than the sum of its proper divisors (100635063).

225856137 is a wasteful number, since it uses less digits than its factorization.

225856137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39032.

The product of its digits is 100800, while the sum is 39.

The square root of 225856137 is about 15028.5108044676. The cubic root of 225856137 is about 608.9906599337.

The spelling of 225856137 in words is "two hundred twenty-five million, eight hundred fifty-six thousand, one hundred thirty-seven".