155525222 has 8 divisors (see below), whose sum is σ = 245566200. Its totient is φ = 73669824.

The previous prime is 155525207. The next prime is 155525243. The reversal of 155525222 is 222525551.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2046347 + ... + 2046422.

It is an arithmetic number, because the mean of its divisors is an integer number (30695775).

Almost surely, 2^155525222 is an apocalyptic number.

155525222 is a deficient number, since it is larger than the sum of its proper divisors (90040978).

155525222 is a wasteful number, since it uses less digits than its factorization.

155525222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092790.

The product of its digits is 10000, while the sum is 29.

The square root of 155525222 is about 12470.9751823985. The cubic root of 155525222 is about 537.7745885256.

The spelling of 155525222 in words is "one hundred fifty-five million, five hundred twenty-five thousand, two hundred twenty-two".