155225452553344 has 32 divisors (see below), whose sum is σ = 315072889409340. Its totient is φ = 76148335211520.

The previous prime is 155225452553309. The next prime is 155225452553377. The reversal of 155225452553344 is 443355254522551.

It can be written as a sum of positive squares in 2 ways, for example, as 151241787841600 + 3983664711744 = 12298040^2 + 1995912^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×155225452553344² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11440548387 + ... + 11440561954.

Almost surely, 2^{155225452553344} is an apocalyptic number.

It is an amenable number.

155225452553344 is an abundant number, since it is smaller than the sum of its proper divisors (159847436855996).

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

155225452553344 is an equidigital number, since it uses as much as digits as its factorization.

155225452553344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22881110408 (or 22881110396 counting only the distinct ones).

The product of its digits is 72000000, while the sum is 55.

The spelling of 155225452553344 in words is "one hundred fifty-five trillion, two hundred twenty-five billion, four hundred fifty-two million, five hundred fifty-three thousand, three hundred forty-four".