135325251 has 6 divisors (see below), whose sum is σ = 195469820. Its totient is φ = 90216828.

The previous prime is 135325249. The next prime is 135325259. The reversal of 135325251 is 152523531.

It is a happy number.

135325251 is a `hidden beast` number, since 135 + 3 + 2 + 525 + 1 = 666.

It is not a de Polignac number, because 135325251 - 2¹ = 135325249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135325259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7518061 + ... + 7518078.

Almost surely, 2^135325251 is an apocalyptic number.

135325251 is a deficient number, since it is larger than the sum of its proper divisors (60144569).

135325251 is a wasteful number, since it uses less digits than its factorization.

135325251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15036145 (or 15036142 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 135325251 is about 11632.9381929072. The cubic root of 135325251 is about 513.4044323945.

Adding to 135325251 its reverse (152523531), we get a palindrome (287848782).

The spelling of 135325251 in words is "one hundred thirty-five million, three hundred twenty-five thousand, two hundred fifty-one".