250561304613 has 16 divisors (see below), whose sum is σ = 371258448000. Its totient is φ = 167015437920.

The previous prime is 250561304611. The next prime is 250561304629. The reversal of 250561304613 is 316403165052.

250561304613 is a `hidden beast` number, since 2 + 5 + 0 + 5 + 6 + 1 + 30 + 4 + 613 = 666.

It is not a de Polignac number, because 250561304613 - 2¹ = 250561304611 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250561304611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524968 + ... + 881313.

It is an arithmetic number, because the mean of its divisors is an integer number (23203653000).

Almost surely, 2^250561304613 is an apocalyptic number.

It is an amenable number.

250561304613 is a deficient number, since it is larger than the sum of its proper divisors (120697143387).

250561304613 is a wasteful number, since it uses less digits than its factorization.

250561304613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412889 (or 1412883 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 250561304613 its reverse (316403165052), we get a palindrome (566964469665).

The spelling of 250561304613 in words is "two hundred fifty billion, five hundred sixty-one million, three hundred four thousand, six hundred thirteen".