135725845 has 24 divisors (see below), whose sum is σ = 170506296. Its totient is φ = 103678848.

The previous prime is 135725839. The next prime is 135725851. The reversal of 135725845 is 548527531.

It is an interprime number because it is at equal distance from previous prime (135725839) and next prime (135725851).

It can be written as a sum of positive squares in 4 ways, for example, as 8803089 + 126922756 = 2967^2 + 11266^2 .

It is not a de Polignac number, because 135725845 - 2⁵ = 135725813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135725798 and 135725807.

It is a congruent 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, 489847 + ... + 490123.

It is an arithmetic number, because the mean of its divisors is an integer number (7104429).

Almost surely, 2^135725845 is an apocalyptic number.

It is an amenable number.

135725845 is a deficient number, since it is larger than the sum of its proper divisors (34780451).

135725845 is an equidigital number, since it uses as much as digits as its factorization.

135725845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 378 counting only the distinct ones).

The product of its digits is 168000, while the sum is 40.

The square root of 135725845 is about 11650.1435613472. The cubic root of 135725845 is about 513.9105319002.

The spelling of 135725845 in words is "one hundred thirty-five million, seven hundred twenty-five thousand, eight hundred forty-five".