135425278 has 4 divisors (see below), whose sum is σ = 203137920. Its totient is φ = 67712638.

The previous prime is 135425263. The next prime is 135425309. The reversal of 135425278 is 872524531.

135425278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 872524531 = 53 ⋅16462727.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33856318 + ... + 33856321.

It is an arithmetic number, because the mean of its divisors is an integer number (50784480).

Almost surely, 2^135425278 is an apocalyptic number.

135425278 is a deficient number, since it is larger than the sum of its proper divisors (67712642).

135425278 is an equidigital number, since it uses as much as digits as its factorization.

135425278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67712641.

The product of its digits is 67200, while the sum is 37.

The square root of 135425278 is about 11637.2366994919. The cubic root of 135425278 is about 513.5308972312.

The spelling of 135425278 in words is "one hundred thirty-five million, four hundred twenty-five thousand, two hundred seventy-eight".