155555325 has 36 divisors (see below), whose sum is σ = 290740320. Its totient is φ = 79353120.

The previous prime is 155555297. The next prime is 155555327. The reversal of 155555325 is 523555551.

It is not a de Polignac number, because 155555325 - 2¹² = 155551229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155555325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155555327) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9855 + ... + 20204.

It is an arithmetic number, because the mean of its divisors is an integer number (8076120).

Almost surely, 2^155555325 is an apocalyptic number.

155555325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155555325 is a deficient number, since it is larger than the sum of its proper divisors (135184995).

155555325 is a wasteful number, since it uses less digits than its factorization.

155555325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30098 (or 30090 counting only the distinct ones).

The product of its digits is 93750, while the sum is 36.

The square root of 155555325 is about 12472.1820464584. The cubic root of 155555325 is about 537.8092829712.

The spelling of 155555325 in words is "one hundred fifty-five million, five hundred fifty-five thousand, three hundred twenty-five".