155165025 has 24 divisors (see below), whose sum is σ = 256934944. Its totient is φ = 82627200.

The previous prime is 155165009. The next prime is 155165081. The reversal of 155165025 is 520561551.

155165025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155165025 - 2⁴ = 155165009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155164983 and 155165001.

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, 66885 + ... + 69165.

Almost surely, 2^155165025 is an apocalyptic number.

155165025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155165025 is a deficient number, since it is larger than the sum of its proper divisors (101769919).

155165025 is a wasteful number, since it uses less digits than its factorization.

155165025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201 (or 3196 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 155165025 is about 12456.5253983605. The cubic root of 155165025 is about 537.3591049489.

The spelling of 155165025 in words is "one hundred fifty-five million, one hundred sixty-five thousand, twenty-five".