155504204425 has 24 divisors (see below), whose sum is σ = 195995414816. Its totient is φ = 122363619840.

The previous prime is 155504204423. The next prime is 155504204459. The reversal of 155504204425 is 524402405551.

It is not a de Polignac number, because 155504204425 - 2¹ = 155504204423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155504204423) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 1058302 + ... + 1196248.

Almost surely, 2^155504204425 is an apocalyptic number.

It is an amenable number.

155504204425 is a deficient number, since it is larger than the sum of its proper divisors (40491210391).

155504204425 is a wasteful number, since it uses less digits than its factorization.

155504204425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138697 (or 138692 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 37.

Adding to 155504204425 its reverse (524402405551), we get a palindrome (679906609976).

The spelling of 155504204425 in words is "one hundred fifty-five billion, five hundred four million, two hundred four thousand, four hundred twenty-five".