135678625 has 8 divisors (see below), whose sum is σ = 169327080. Its totient is φ = 108542800.

The previous prime is 135678623. The next prime is 135678637. The reversal of 135678625 is 526876531.

It can be written as a sum of positive squares in 4 ways, for example, as 32615521 + 103063104 = 5711^2 + 10152^2 .

It is not a de Polignac number, because 135678625 - 2¹ = 135678623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135678623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542590 + ... + 542839.

It is an arithmetic number, because the mean of its divisors is an integer number (21165885).

Almost surely, 2^135678625 is an apocalyptic number.

It is an amenable number.

135678625 is a deficient number, since it is larger than the sum of its proper divisors (33648455).

135678625 is an equidigital number, since it uses as much as digits as its factorization.

135678625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085444 (or 1085434 counting only the distinct ones).

The product of its digits is 302400, while the sum is 43.

The square root of 135678625 is about 11648.1168005820. The cubic root of 135678625 is about 513.8509272610.

The spelling of 135678625 in words is "one hundred thirty-five million, six hundred seventy-eight thousand, six hundred twenty-five".