155129025 has 12 divisors (see below), whose sum is σ = 256480112. Its totient is φ = 82735440.

The previous prime is 155129011. The next prime is 155129059. The reversal of 155129025 is 520921551.

It is not a de Polignac number, because 155129025 - 2⁸ = 155128769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155128983 and 155129001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1034119 + ... + 1034268.

Almost surely, 2^155129025 is an apocalyptic number.

155129025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155129025 is a deficient number, since it is larger than the sum of its proper divisors (101351087).

155129025 is a wasteful number, since it uses less digits than its factorization.

155129025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068400 (or 2068395 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 155129025 is about 12455.0802887818. The cubic root of 155129025 is about 537.3175439849.

The spelling of 155129025 in words is "one hundred fifty-five million, one hundred twenty-nine thousand, twenty-five".