451242725 has 6 divisors (see below), whose sum is σ = 559541010. Its totient is φ = 360994160.

The previous prime is 451242709. The next prime is 451242733. The reversal of 451242725 is 527242154.

It can be written as a sum of positive squares in 3 ways, for example, as 19351201 + 431891524 = 4399^2 + 20782^2 .

It is not a de Polignac number, because 451242725 - 2⁴ = 451242709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 451242691 and 451242700.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 9024830 + ... + 9024879.

It is an arithmetic number, because the mean of its divisors is an integer number (93256835).

Almost surely, 2^451242725 is an apocalyptic number.

It is an amenable number.

451242725 is a deficient number, since it is larger than the sum of its proper divisors (108298285).

451242725 is a wasteful number, since it uses less digits than its factorization.

451242725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18049719 (or 18049714 counting only the distinct ones).

The product of its digits is 22400, while the sum is 32.

The square root of 451242725 is about 21242.4745498259. The cubic root of 451242725 is about 767.0142002406.

Adding to 451242725 its reverse (527242154), we get a palindrome (978484879).

The spelling of 451242725 in words is "four hundred fifty-one million, two hundred forty-two thousand, seven hundred twenty-five".