155127025 has 27 divisors (see below), whose sum is σ = 200315521. Its totient is φ = 119169440.

The previous prime is 155127017. The next prime is 155127041. The reversal of 155127025 is 520721551.

The square root of 155127025 is 12455.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1168561 + 153958464 = 1081^2 + 12408^2 .

It is not a de Polignac number, because 155127025 - 2³ = 155127017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155126984 and 155127002.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2926899 + ... + 2926951.

Almost surely, 2^155127025 is an apocalyptic number.

155127025 is the 12455-th square number.

155127025 is the 6228-th centered octagonal number.

It is an amenable number.

155127025 is a deficient number, since it is larger than the sum of its proper divisors (45188496).

155127025 is an frugal number, since it uses more digits than its factorization.

155127025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The cubic root of 155127025 is about 537.3152348539.

Adding to 155127025 its reverse (520721551), we get a palindrome (675848576).

The spelling of 155127025 in words is "one hundred fifty-five million, one hundred twenty-seven thousand, twenty-five".