156125025 has 135 divisors (see below), whose sum is σ = 346542521. Its totient is φ = 67173120.

The previous prime is 156125017. The next prime is 156125069. The reversal of 156125025 is 520521651.

The square root of 156125025 is 12495.

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

156125025 is a `hidden beast` number, since 156 + 1 + 2 + 502 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3651921 + 152473104 = 1911^2 + 12348^2 .

It is not a de Polignac number, because 156125025 - 2³ = 156125017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156125025.

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 134 ways as a sum of consecutive naturals, for example, 9183817 + ... + 9183833.

Almost surely, 2^156125025 is an apocalyptic number.

156125025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

156125025 is the 12495-th square number.

156125025 is the 6248-th centered octagonal number.

It is an amenable number.

156125025 is an abundant number, since it is smaller than the sum of its proper divisors (190417496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156125025 is an equidigital number, since it uses as much as digits as its factorization.

156125025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 32 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The cubic root of 156125025 is about 538.4650339517.

Adding to 156125025 its reverse (520521651), we get a palindrome (676646676).

The spelling of 156125025 in words is "one hundred fifty-six million, one hundred twenty-five thousand, twenty-five".