155605325 has 6 divisors (see below), whose sum is σ = 192950634. Its totient is φ = 124484240.

The previous prime is 155605309. The next prime is 155605381. The reversal of 155605325 is 523506551.

It can be written as a sum of positive squares in 3 ways, for example, as 1522756 + 154082569 = 1234^2 + 12413^2 .

It is not a de Polignac number, because 155605325 - 2⁴ = 155605309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155605291 and 155605300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3112082 + ... + 3112131.

It is an arithmetic number, because the mean of its divisors is an integer number (32158439).

Almost surely, 2^155605325 is an apocalyptic number.

It is an amenable number.

155605325 is a deficient number, since it is larger than the sum of its proper divisors (37345309).

155605325 is an equidigital number, since it uses as much as digits as its factorization.

155605325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6224223 (or 6224218 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 155605325 is about 12474.1863462111. The cubic root of 155605325 is about 537.8668993070.

The spelling of 155605325 in words is "one hundred fifty-five million, six hundred five thousand, three hundred twenty-five".