155522200025 has 12 divisors (see below), whose sum is σ = 192911499600. Its totient is φ = 124376488080.

The previous prime is 155522200003. The next prime is 155522200033. The reversal of 155522200025 is 520002225551.

155522200025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-155522200025 is a prime.

It is a super-2 number, since 2×155522200025² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 954815 + ... + 1105764.

It is an arithmetic number, because the mean of its divisors is an integer number (16075958300).

Almost surely, 2^155522200025 is an apocalyptic number.

It is an amenable number.

155522200025 is a deficient number, since it is larger than the sum of its proper divisors (37389299575).

155522200025 is a wasteful number, since it uses less digits than its factorization.

155522200025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063608 (or 2063603 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

Adding to 155522200025 its reverse (520002225551), we get a palindrome (675524425576).

The spelling of 155522200025 in words is "one hundred fifty-five billion, five hundred twenty-two million, two hundred thousand, twenty-five".