159988000225 has 9 divisors (see below), whose sum is σ = 198387600217. Its totient is φ = 127988800240.

The previous prime is 159988000213. The next prime is 159988000241. The reversal of 159988000225 is 522000889951.

The square root of 159988000225 is 399985.

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 52650514849 + 107337485376 = 229457^2 + 327624^2 .

It is not a de Polignac number, because 159988000225 - 2⁷ = 159988000097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1959927 + ... + 2039923.

Almost surely, 2^159988000225 is an apocalyptic number.

159988000225 is the 399985-th square number.

159988000225 is the 199993-rd centered octagonal number.

It is an amenable number.

159988000225 is a deficient number, since it is larger than the sum of its proper divisors (38399599992).

159988000225 is an frugal number, since it uses more digits than its factorization.

159988000225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160004 (or 80002 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 49.

Multiplying 159988000225 by its sum of digits (49), we get a square (7839412011025 = 2799895²).

The spelling of 159988000225 in words is "one hundred fifty-nine billion, nine hundred eighty-eight million, two hundred twenty-five", and thus it is an aban number.