63425261 has 2 divisors, whose sum is σ = 63425262. Its totient is φ = 63425260.

The previous prime is 63425251. The next prime is 63425269. The reversal of 63425261 is 16252436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32844361 + 30580900 = 5731^2 + 5530^2 .

It is a cyclic number.

It is not a de Polignac number, because 63425261 - 2¹⁰ = 63424237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63425269) 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 as a sum of consecutive naturals, namely, 31712630 + 31712631.

It is an arithmetic number, because the mean of its divisors is an integer number (31712631).

Almost surely, 2^63425261 is an apocalyptic number.

It is an amenable number.

63425261 is a deficient number, since it is larger than the sum of its proper divisors (1).

63425261 is an equidigital number, since it uses as much as digits as its factorization.

63425261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 63425261 is about 7963.9978026114. The cubic root of 63425261 is about 398.7990248388.

Adding to 63425261 its reverse (16252436), we get a palindrome (79677697).

The spelling of 63425261 in words is "sixty-three million, four hundred twenty-five thousand, two hundred sixty-one".