633544362025 has 9 divisors (see below), whose sum is σ = 785599943863. Its totient is φ = 506832305800.

The previous prime is 633544362023. The next prime is 633544362029. The reversal of 633544362025 is 520263445336.

The square root of 633544362025 is 795955.

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., 228075970329 + 405468391696 = 477573^2 + 636764^2 .

It is not a de Polignac number, because 633544362025 - 2¹ = 633544362023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (633544362023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3900180 + ... + 4059370.

Almost surely, 2^633544362025 is an apocalyptic number.

633544362025 is the 795955-th square number.

633544362025 is the 397978-th centered octagonal number.

It is an amenable number.

633544362025 is a deficient number, since it is larger than the sum of its proper divisors (152055581838).

633544362025 is an frugal number, since it uses more digits than its factorization.

633544362025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318392 (or 159196 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 43.

The spelling of 633544362025 in words is "six hundred thirty-three billion, five hundred forty-four million, three hundred sixty-two thousand, twenty-five".