155164132611225 has 72 divisors (see below), whose sum is σ = 279869392420800. Its totient is φ = 82172958226560.

The previous prime is 155164132611211. The next prime is 155164132611263. The reversal of 155164132611225 is 522116231461551.

155164132611225 is a `hidden beast` number, since 1 + 5 + 5 + 1 + 6 + 4 + 1 + 3 + 2 + 611 + 2 + 25 = 666.

It is not a de Polignac number, because 155164132611225 - 2⁷ = 155164132611097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 106118052 + ... + 107570298.

Almost surely, 2^{155164132611225} is an apocalyptic number.

155164132611225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155164132611225 is a deficient number, since it is larger than the sum of its proper divisors (124705259809575).

155164132611225 is a wasteful number, since it uses less digits than its factorization.

155164132611225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455599 (or 1455591 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The spelling of 155164132611225 in words is "one hundred fifty-five trillion, one hundred sixty-four billion, one hundred thirty-two million, six hundred eleven thousand, two hundred twenty-five".