135225481 has 2 divisors, whose sum is σ = 135225482. Its totient is φ = 135225480.

The previous prime is 135225479. The next prime is 135225523. The reversal of 135225481 is 184522531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134444025 + 781456 = 11595^2 + 884^2 .

It is an emirp because it is prime and its reverse (184522531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135225481 - 2¹ = 135225479 is a prime.

It is a super-2 number, since 2×135225481² = 36571861423362722, which contains 22 as substring.

Together with 135225479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (135223481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67612740 + 67612741.

It is an arithmetic number, because the mean of its divisors is an integer number (67612741).

Almost surely, 2^135225481 is an apocalyptic number.

It is an amenable number.

135225481 is a deficient number, since it is larger than the sum of its proper divisors (1).

135225481 is an equidigital number, since it uses as much as digits as its factorization.

135225481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 31.

The square root of 135225481 is about 11628.6491476869. The cubic root of 135225481 is about 513.2782303908.

The spelling of 135225481 in words is "one hundred thirty-five million, two hundred twenty-five thousand, four hundred eighty-one".