135311425 has 12 divisors (see below), whose sum is σ = 168032896. Its totient is φ = 108090000.

The previous prime is 135311399. The next prime is 135311447. The reversal of 135311425 is 524113531.

It is a happy number.

It is not a de Polignac number, because 135311425 - 2¹⁹ = 134787137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135311425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15172 + ... + 22378.

Almost surely, 2^135311425 is an apocalyptic number.

It is an amenable number.

135311425 is a deficient number, since it is larger than the sum of its proper divisors (32721471).

135311425 is an equidigital number, since it uses as much as digits as its factorization.

135311425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7968 (or 7963 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 135311425 is about 11632.3439168553. The cubic root of 135311425 is about 513.3869471841.

Adding to 135311425 its reverse (524113531), we get a palindrome (659424956).

The spelling of 135311425 in words is "one hundred thirty-five million, three hundred eleven thousand, four hundred twenty-five".