63135425 has 6 divisors (see below), whose sum is σ = 78287958. Its totient is φ = 50508320.

The previous prime is 63135421. The next prime is 63135439. The reversal of 63135425 is 52453136.

It can be written as a sum of positive squares in 3 ways, for example, as 1056784 + 62078641 = 1028^2 + 7879^2 .

It is not a de Polignac number, because 63135425 - 2² = 63135421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63135421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1262684 + ... + 1262733.

It is an arithmetic number, because the mean of its divisors is an integer number (13047993).

Almost surely, 2^63135425 is an apocalyptic number.

It is an amenable number.

63135425 is a deficient number, since it is larger than the sum of its proper divisors (15152533).

63135425 is a wasteful number, since it uses less digits than its factorization.

63135425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525427 (or 2525422 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 63135425 is about 7945.7803266891. The cubic root of 63135425 is about 398.1906298734.

The spelling of 63135425 in words is "sixty-three million, one hundred thirty-five thousand, four hundred twenty-five".