242856768025 has 9 divisors (see below), whose sum is σ = 301145447773. Its totient is φ = 194283443200.

The previous prime is 242856768023. The next prime is 242856768079. The reversal of 242856768025 is 520867658242.

The square root of 242856768025 is 492805.

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 18669669769 + 224187098256 = 136637^2 + 473484^2 .

It is not a de Polignac number, because 242856768025 - 2¹ = 242856768023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242856768023) 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, 2414745 + ... + 2513305.

Almost surely, 2^242856768025 is an apocalyptic number.

242856768025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

242856768025 is the 492805-th square number.

242856768025 is the 246403-rd centered octagonal number.

It is an amenable number.

242856768025 is a deficient number, since it is larger than the sum of its proper divisors (58288679748).

242856768025 is an frugal number, since it uses more digits than its factorization.

242856768025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197132 (or 98566 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 55.

The spelling of 242856768025 in words is "two hundred forty-two billion, eight hundred fifty-six million, seven hundred sixty-eight thousand, twenty-five".