155232155025 has 96 divisors (see below), whose sum is σ = 291262608000. Its totient is φ = 81033108480.

The previous prime is 155232155009. The next prime is 155232155077. The reversal of 155232155025 is 520551232551.

155232155025 is a `hidden beast` number, since 1 + 5 + 52 + 32 + 1 + 550 + 25 = 666.

It is not a de Polignac number, because 155232155025 - 2⁴ = 155232155009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9270861 + ... + 9287589.

It is an arithmetic number, because the mean of its divisors is an integer number (3033985500).

Almost surely, 2^155232155025 is an apocalyptic number.

155232155025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155232155025 is a deficient number, since it is larger than the sum of its proper divisors (136030452975).

155232155025 is a wasteful number, since it uses less digits than its factorization.

155232155025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17040 (or 17029 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

Adding to 155232155025 its reverse (520551232551), we get a palindrome (675783387576).

The spelling of 155232155025 in words is "one hundred fifty-five billion, two hundred thirty-two million, one hundred fifty-five thousand, twenty-five".