155225027 has 4 divisors (see below), whose sum is σ = 159420336. Its totient is φ = 151029720.

The previous prime is 155225009. The next prime is 155225039. The reversal of 155225027 is 720522551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155225027 - 2⁶ = 155224963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155225627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2097599 + ... + 2097672.

It is an arithmetic number, because the mean of its divisors is an integer number (39855084).

Almost surely, 2^155225027 is an apocalyptic number.

155225027 is a deficient number, since it is larger than the sum of its proper divisors (4195309).

155225027 is an equidigital number, since it uses as much as digits as its factorization.

155225027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4195308.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 155225027 is about 12458.9336221043. The cubic root of 155225027 is about 537.4283612473.

Adding to 155225027 its reverse (720522551), we get a palindrome (875747578).

The spelling of 155225027 in words is "one hundred fifty-five million, two hundred twenty-five thousand, twenty-seven".