824545722025 has 9 divisors (see below), whose sum is σ = 1022442325221. Its totient is φ = 659632945440.

The previous prime is 824545721983. The next prime is 824545722031. The reversal of 824545722025 is 520227545428.

It is a happy number.

The square root of 824545722025 is 908045.

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 3050021529 + 821495700496 = 55227^2 + 906364^2 .

It is not a de Polignac number, because 824545722025 - 2¹⁹ = 824545197737 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, 4449421 + ... + 4631029.

Almost surely, 2^824545722025 is an apocalyptic number.

824545722025 is the 908045-th square number.

824545722025 is the 454023-rd centered octagonal number.

It is an amenable number.

824545722025 is a deficient number, since it is larger than the sum of its proper divisors (197896603196).

824545722025 is an frugal number, since it uses more digits than its factorization.

824545722025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363228 (or 181614 counting only the distinct ones).

The product of its (nonzero) digits is 1792000, while the sum is 46.

The spelling of 824545722025 in words is "eight hundred twenty-four billion, five hundred forty-five million, seven hundred twenty-two thousand, twenty-five".