239869755225 has 81 divisors (see below), whose sum is σ = 435217992573. Its totient is φ = 126288843840.

The previous prime is 239869755199. The next prime is 239869755241. The reversal of 239869755225 is 522557968932.

The square root of 239869755225 is 489765.

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

239869755225 is a `hidden beast` number, since 2 + 39 + 8 + 6 + 9 + 75 + 522 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 96822412569 + 143047342656 = 311163^2 + 378216^2 .

It is not a de Polignac number, because 239869755225 - 2²³ = 239861366617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 756686767 + ... + 756687083.

Almost surely, 2^239869755225 is an apocalyptic number.

239869755225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

239869755225 is the 489765-th square number.

239869755225 is the 244883-rd centered octagonal number.

It is an amenable number.

239869755225 is a deficient number, since it is larger than the sum of its proper divisors (195348237348).

239869755225 is an equidigital number, since it uses as much as digits as its factorization.

239869755225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 428 counting only the distinct ones).

The product of its digits is 81648000, while the sum is 63.

The spelling of 239869755225 in words is "two hundred thirty-nine billion, eight hundred sixty-nine million, seven hundred fifty-five thousand, two hundred twenty-five".