155225868 has 48 divisors (see below), whose sum is σ = 420129024. Its totient is φ = 43686720.

The previous prime is 155225867. The next prime is 155225869. The reversal of 155225868 is 868522551.

155225868 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155225867) and next prime (155225869).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (155225867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8163 + ... + 19418.

It is an arithmetic number, because the mean of its divisors is an integer number (8752688).

Almost surely, 2^155225868 is an apocalyptic number.

It is an amenable number.

155225868 is an abundant number, since it is smaller than the sum of its proper divisors (264903156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155225868 is a wasteful number, since it uses less digits than its factorization.

155225868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27662 (or 27660 counting only the distinct ones).

The product of its digits is 192000, while the sum is 42.

The square root of 155225868 is about 12458.9673729407. The cubic root of 155225868 is about 537.4293318306.

The spelling of 155225868 in words is "one hundred fifty-five million, two hundred twenty-five thousand, eight hundred sixty-eight".