135223625 has 8 divisors (see below), whose sum is σ = 168759240. Its totient is φ = 108178800.

The previous prime is 135223619. The next prime is 135223637. The reversal of 135223625 is 526322531.

It can be written as a sum of positive squares in 4 ways, for example, as 6446521 + 128777104 = 2539^2 + 11348^2 .

It is not a de Polignac number, because 135223625 - 2¹⁸ = 134961481 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540770 + ... + 541019.

It is an arithmetic number, because the mean of its divisors is an integer number (21094905).

Almost surely, 2^135223625 is an apocalyptic number.

It is an amenable number.

135223625 is a deficient number, since it is larger than the sum of its proper divisors (33535615).

135223625 is an equidigital number, since it uses as much as digits as its factorization.

135223625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081804 (or 1081794 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 135223625 is about 11628.5693445067. The cubic root of 135223625 is about 513.2758820939.

The spelling of 135223625 in words is "one hundred thirty-five million, two hundred twenty-three thousand, six hundred twenty-five".