425565533 has 2 divisors, whose sum is σ = 425565534. Its totient is φ = 425565532.

The previous prime is 425565523. The next prime is 425565541. The reversal of 425565533 is 335565524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245925124 + 179640409 = 15682^2 + 13403^2 .

It is a cyclic number.

It is not a de Polignac number, because 425565533 - 2⁸ = 425565277 is a prime.

It is a super-2 number, since 2×425565533² = 362212045755148178, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425565523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212782766 + 212782767.

It is an arithmetic number, because the mean of its divisors is an integer number (212782767).

Almost surely, 2^425565533 is an apocalyptic number.

It is an amenable number.

425565533 is a deficient number, since it is larger than the sum of its proper divisors (1).

425565533 is an equidigital number, since it uses as much as digits as its factorization.

425565533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270000, while the sum is 38.

The square root of 425565533 is about 20629.2397581685. The cubic root of 425565533 is about 752.1806361418.

Subtracting from 425565533 its reverse (335565524), we obtain a palindrome (90000009).

The spelling of 425565533 in words is "four hundred twenty-five million, five hundred sixty-five thousand, five hundred thirty-three".