135251225 has 12 divisors (see below), whose sum is σ = 170216784. Its totient is φ = 106584720.

The previous prime is 135251219. The next prime is 135251267. The reversal of 135251225 is 522152531.

It is not a de Polignac number, because 135251225 - 2⁴ = 135251209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135251194 and 135251203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38699 + ... + 42048.

It is an arithmetic number, because the mean of its divisors is an integer number (14184732).

Almost surely, 2^135251225 is an apocalyptic number.

It is an amenable number.

135251225 is a deficient number, since it is larger than the sum of its proper divisors (34965559).

135251225 is an equidigital number, since it uses as much as digits as its factorization.

135251225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80824 (or 80819 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 135251225 is about 11629.7560163574. The cubic root of 135251225 is about 513.3108006732.

The spelling of 135251225 in words is "one hundred thirty-five million, two hundred fifty-one thousand, two hundred twenty-five".