275225407 has 2 divisors, whose sum is σ = 275225408. Its totient is φ = 275225406.

The previous prime is 275225329. The next prime is 275225417. The reversal of 275225407 is 704522572.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 275225407 - 2²⁷ = 141007679 is a prime.

It is a super-4 number, since 4×275225407⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275225417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137612703 + 137612704.

It is an arithmetic number, because the mean of its divisors is an integer number (137612704).

Almost surely, 2^275225407 is an apocalyptic number.

275225407 is a deficient number, since it is larger than the sum of its proper divisors (1).

275225407 is an equidigital number, since it uses as much as digits as its factorization.

275225407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 275225407 is about 16589.9188364500. The cubic root of 275225407 is about 650.4733490952.

Adding to 275225407 its reverse (704522572), we get a palindrome (979747979).

The spelling of 275225407 in words is "two hundred seventy-five million, two hundred twenty-five thousand, four hundred seven".