159916011025 has 9 divisors (see below), whose sum is σ = 198298333051. Its totient is φ = 127931209240.

The previous prime is 159916011019. The next prime is 159916011029. The reversal of 159916011025 is 520110619951.

The square root of 159916011025 is 399895.

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

It can be written as a sum of positive squares in only one way, i.e., 57569763969 + 102346247056 = 239937^2 + 319916^2 .

It is not a de Polignac number, because 159916011025 - 2¹¹ = 159916008977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159916011029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1959486 + ... + 2039464.

Almost surely, 2^159916011025 is an apocalyptic number.

159916011025 is the 399895-th square number.

159916011025 is the 199948-th centered octagonal number.

It is an amenable number.

159916011025 is a deficient number, since it is larger than the sum of its proper divisors (38382322026).

159916011025 is an frugal number, since it uses more digits than its factorization.

159916011025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159968 (or 79984 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 40.

The spelling of 159916011025 in words is "one hundred fifty-nine billion, nine hundred sixteen million, eleven thousand, twenty-five".