63801025 has 6 divisors (see below), whose sum is σ = 79113302. Its totient is φ = 51040800.

The previous prime is 63801019. The next prime is 63801161. The reversal of 63801025 is 52010836.

It is a happy number.

63801025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 693889 + 63107136 = 833^2 + 7944^2 .

It is not a de Polignac number, because 63801025 - 2⁷ = 63800897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 2552041 = 63801025 / (6 + 3 + 8 + 0 + 1 + 0 + 2 + 5).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1275996 + ... + 1276045.

Almost surely, 2^63801025 is an apocalyptic number.

It is an amenable number.

63801025 is a deficient number, since it is larger than the sum of its proper divisors (15312277).

63801025 is a wasteful number, since it uses less digits than its factorization.

63801025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552051 (or 2552046 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 63801025 is about 7987.5543816615. The cubic root of 63801025 is about 399.5850384161.

The spelling of 63801025 in words is "sixty-three million, eight hundred one thousand, twenty-five".