155501325 has 36 divisors (see below), whose sum is σ = 318311968. Its totient is φ = 71085600.

The previous prime is 155501279. The next prime is 155501341. The reversal of 155501325 is 523105551.

155501325 is a `hidden beast` number, since 155 + 501 + 3 + 2 + 5 = 666.

It is not a de Polignac number, because 155501325 - 2⁷ = 155501197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 47791 + ... + 50940.

Almost surely, 2^155501325 is an apocalyptic number.

155501325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155501325 is an abundant number, since it is smaller than the sum of its proper divisors (162810643).

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

155501325 is a wasteful number, since it uses less digits than its factorization.

155501325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98754 (or 98746 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 155501325 is about 12470.0170408865. The cubic root of 155501325 is about 537.7470434594.

Adding to 155501325 its reverse (523105551), we get a palindrome (678606876).

The spelling of 155501325 in words is "one hundred fifty-five million, five hundred one thousand, three hundred twenty-five".