63506280925 has 6 divisors (see below), whose sum is σ = 78747788378. Its totient is φ = 50805024720.

The previous prime is 63506280923. The next prime is 63506280961. The reversal of 63506280925 is 52908260536.

It can be written as a sum of positive squares in 3 ways, for example, as 15888196 + 63490392729 = 3986^2 + 251973^2 .

It is not a de Polignac number, because 63506280925 - 2¹ = 63506280923 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63506280923) 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, 1270125594 + ... + 1270125643.

Almost surely, 2^63506280925 is an apocalyptic number.

It is an amenable number.

63506280925 is a deficient number, since it is larger than the sum of its proper divisors (15241507453).

63506280925 is a wasteful number, since it uses less digits than its factorization.

63506280925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540251247 (or 2540251242 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 63506280925 in words is "sixty-three billion, five hundred six million, two hundred eighty thousand, nine hundred twenty-five".