425336561 has 8 divisors (see below), whose sum is σ = 462778344. Its totient is φ = 388569600.

The previous prime is 425336557. The next prime is 425336567. The reversal of 425336561 is 165633524.

It can be written as a sum of positive squares in 4 ways, for example, as 11458225 + 413878336 = 3385^2 + 20344^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425336561 - 2² = 425336557 is a prime.

It is a super-3 number, since 3×425336561³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (425336567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167390 + ... + 169911.

It is an arithmetic number, because the mean of its divisors is an integer number (57847293).

Almost surely, 2^425336561 is an apocalyptic number.

It is an amenable number.

425336561 is a deficient number, since it is larger than the sum of its proper divisors (37441783).

425336561 is a wasteful number, since it uses less digits than its factorization.

425336561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337411.

The product of its digits is 64800, while the sum is 35.

The square root of 425336561 is about 20623.6893159299. The cubic root of 425336561 is about 752.0457104259.

It can be divided in two parts, 42533 and 6561, that added together give a palindrome (49094).

The spelling of 425336561 in words is "four hundred twenty-five million, three hundred thirty-six thousand, five hundred sixty-one".