135856825 has 24 divisors (see below), whose sum is σ = 182863296. Its totient is φ = 99528000.

The previous prime is 135856813. The next prime is 135856841. The reversal of 135856825 is 528658531.

It is not a de Polignac number, because 135856825 - 2¹³ = 135848633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40980 + ... + 44170.

It is an arithmetic number, because the mean of its divisors is an integer number (7619304).

Almost surely, 2^135856825 is an apocalyptic number.

It is an amenable number.

135856825 is a deficient number, since it is larger than the sum of its proper divisors (47006471).

135856825 is a wasteful number, since it uses less digits than its factorization.

135856825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345 (or 3340 counting only the distinct ones).

The product of its digits is 288000, while the sum is 43.

The square root of 135856825 is about 11655.7635957495. The cubic root of 135856825 is about 514.0757923935.

The spelling of 135856825 in words is "one hundred thirty-five million, eight hundred fifty-six thousand, eight hundred twenty-five".