155225023 has 8 divisors (see below), whose sum is σ = 162514800. Its totient is φ = 148064448.

The previous prime is 155225009. The next prime is 155225039. The reversal of 155225023 is 320522551.

It is a happy number.

155225023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155225023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155225093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29838 + ... + 34651.

It is an arithmetic number, because the mean of its divisors is an integer number (20314350).

Almost surely, 2^155225023 is an apocalyptic number.

155225023 is a deficient number, since it is larger than the sum of its proper divisors (7289777).

155225023 is an equidigital number, since it uses as much as digits as its factorization.

155225023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64601.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 155225023 is about 12458.9334615769. The cubic root of 155225023 is about 537.4283566310.

Adding to 155225023 its reverse (320522551), we get a palindrome (475747574).

The spelling of 155225023 in words is "one hundred fifty-five million, two hundred twenty-five thousand, twenty-three".