135697225 has 24 divisors (see below), whose sum is σ = 175167360. Its totient is φ = 104195520.

The previous prime is 135697223. The next prime is 135697231. The reversal of 135697225 is 522796531.

It is not a de Polignac number, because 135697225 - 2¹ = 135697223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135697223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61186 + ... + 63364.

It is an arithmetic number, because the mean of its divisors is an integer number (7298640).

Almost surely, 2^135697225 is an apocalyptic number.

It is an amenable number.

135697225 is a deficient number, since it is larger than the sum of its proper divisors (39470135).

135697225 is a wasteful number, since it uses less digits than its factorization.

135697225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289 (or 2284 counting only the distinct ones).

The product of its digits is 113400, while the sum is 40.

The square root of 135697225 is about 11648.9151855441. The cubic root of 135697225 is about 513.8744072320.

The spelling of 135697225 in words is "one hundred thirty-five million, six hundred ninety-seven thousand, two hundred twenty-five".