225790637 has 2 divisors, whose sum is σ = 225790638. Its totient is φ = 225790636.

The previous prime is 225790571. The next prime is 225790673. The reversal of 225790637 is 736097522.

Together with next prime (225790673) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201327721 + 24462916 = 14189^2 + 4946^2 .

It is a cyclic number.

It is not a de Polignac number, because 225790637 - 2⁸ = 225790381 is a prime.

It is a super-3 number, since 3×225790637³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 225790594 and 225790603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225790237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112895318 + 112895319.

It is an arithmetic number, because the mean of its divisors is an integer number (112895319).

Almost surely, 2^225790637 is an apocalyptic number.

It is an amenable number.

225790637 is a deficient number, since it is larger than the sum of its proper divisors (1).

225790637 is an equidigital number, since it uses as much as digits as its factorization.

225790637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 225790637 is about 15026.3314551490. The cubic root of 225790637 is about 608.9317835985.

The spelling of 225790637 in words is "two hundred twenty-five million, seven hundred ninety thousand, six hundred thirty-seven".