155055025 has 24 divisors (see below), whose sum is σ = 205344000. Its totient is φ = 115886400.

The previous prime is 155055023. The next prime is 155055031. The reversal of 155055025 is 520550551.

It is a happy number.

It is not a de Polignac number, because 155055025 - 2¹ = 155055023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155054984 and 155055002.

It is not an unprimeable number, because it can be changed into a prime (155055023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19026 + ... + 25924.

It is an arithmetic number, because the mean of its divisors is an integer number (8556000).

Almost surely, 2^155055025 is an apocalyptic number.

It is an amenable number.

155055025 is a deficient number, since it is larger than the sum of its proper divisors (50288975).

155055025 is a wasteful number, since it uses less digits than its factorization.

155055025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6969 (or 6964 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 155055025 is about 12452.1092590774. The cubic root of 155055025 is about 537.2320929175.

The spelling of 155055025 in words is "one hundred fifty-five million, fifty-five thousand, twenty-five".