155253205252 has 6 divisors (see below), whose sum is σ = 271693109198. Its totient is φ = 77626602624.

The previous prime is 155253205243. The next prime is 155253205271. The reversal of 155253205252 is 252502352551.

It can be written as a sum of positive squares in only one way, i.e., 80273622276 + 74979582976 = 283326^2 + 273824^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19406650653 + ... + 19406650660.

Almost surely, 2^155253205252 is an apocalyptic number.

It is an amenable number.

155253205252 is a deficient number, since it is larger than the sum of its proper divisors (116439903946).

155253205252 is a wasteful number, since it uses less digits than its factorization.

155253205252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38813301317 (or 38813301315 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 155253205252 in words is "one hundred fifty-five billion, two hundred fifty-three million, two hundred five thousand, two hundred fifty-two".