159045428025 has 81 divisors (see below), whose sum is σ = 313249010893. Its totient is φ = 77081030400.

The previous prime is 159045427999. The next prime is 159045428027. The reversal of 159045428025 is 520824540951.

The square root of 159045428025 is 398805.

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

159045428025 is a `hidden beast` number, since 1 + 5 + 9 + 0 + 4 + 542 + 80 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 33992665641 + 125052762384 = 184371^2 + 353628^2 .

It is not a de Polignac number, because 159045428025 - 2⁷ = 159045427897 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159045428027) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 65801617 + ... + 65804033.

Almost surely, 2^159045428025 is an apocalyptic number.

159045428025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

159045428025 is the 398805-th square number.

159045428025 is the 199403-rd centered octagonal number.

It is an amenable number.

159045428025 is a deficient number, since it is larger than the sum of its proper divisors (154203582868).

159045428025 is an equidigital number, since it uses as much as digits as its factorization.

159045428025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872 (or 2436 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

Adding to 159045428025 its reverse (520824540951), we get a palindrome (679869968976).

The spelling of 159045428025 in words is "one hundred fifty-nine billion, forty-five million, four hundred twenty-eight thousand, twenty-five".