155225300 has 36 divisors (see below), whose sum is σ = 356656860. Its totient is φ = 58437120.

The previous prime is 155225281. The next prime is 155225309. The reversal of 155225300 is 3522551.

It can be written as a sum of positive squares in 6 ways, for example, as 17960644 + 137264656 = 4238^2 + 11716^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155225309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43955 + ... + 47354.

It is an arithmetic number, because the mean of its divisors is an integer number (9907135).

Almost surely, 2^155225300 is an apocalyptic number.

155225300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155225300 is an abundant number, since it is smaller than the sum of its proper divisors (201431560).

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

155225300 is a wasteful number, since it uses less digits than its factorization.

155225300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91340 (or 91333 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 155225300 is about 12458.9445780933. The cubic root of 155225300 is about 537.4286763122.

Adding to 155225300 its reverse (3522551), we get a palindrome (158747851).

The spelling of 155225300 in words is "one hundred fifty-five million, two hundred twenty-five thousand, three hundred".