155005125243 has 8 divisors (see below), whose sum is σ = 206680835856. Its totient is φ = 103333082400.

The previous prime is 155005125241. The next prime is 155005125271. The reversal of 155005125243 is 342521500551.

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

It is not a de Polignac number, because 155005125243 - 2¹ = 155005125241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155005125241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816768 + ... + 988493.

It is an arithmetic number, because the mean of its divisors is an integer number (25835104482).

Almost surely, 2^155005125243 is an apocalyptic number.

155005125243 is a deficient number, since it is larger than the sum of its proper divisors (51675710613).

155005125243 is a wasteful number, since it uses less digits than its factorization.

155005125243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833885.

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 155005125243 its reverse (342521500551), we get a palindrome (497526625794).

The spelling of 155005125243 in words is "one hundred fifty-five billion, five million, one hundred twenty-five thousand, two hundred forty-three".