425613537 has 6 divisors (see below), whose sum is σ = 614775122. Its totient is φ = 283742352.

The previous prime is 425613533. The next prime is 425613557. The reversal of 425613537 is 735316524.

425613537 is a `hidden beast` number, since 4 + 2 + 5 + 613 + 5 + 37 = 666.

It can be written as a sum of positive squares in only one way, i.e., 259822161 + 165791376 = 16119^2 + 12876^2 .

It is not a de Polignac number, because 425613537 - 2² = 425613533 is a prime.

It is a super-2 number, since 2×425613537² = 362293765755300738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425613533) 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, 23645188 + ... + 23645205.

Almost surely, 2^425613537 is an apocalyptic number.

It is an amenable number.

425613537 is a deficient number, since it is larger than the sum of its proper divisors (189161585).

425613537 is a wasteful number, since it uses less digits than its factorization.

425613537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47290399 (or 47290396 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 425613537 is about 20630.4032195205. The cubic root of 425613537 is about 752.2089171928.

The spelling of 425613537 in words is "four hundred twenty-five million, six hundred thirteen thousand, five hundred thirty-seven".