245257284986 has 12 divisors (see below), whose sum is σ = 427948936218. Its totient is φ = 105110264952.

The previous prime is 245257284971. The next prime is 245257285061. The reversal of 245257284986 is 689482752542.

It can be written as a sum of positive squares in only one way, i.e., 189664605025 + 55592679961 = 435505^2 + 235781^2 .

It is a super-2 number, since 2×245257284986² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1251312581 + ... + 1251312776.

Almost surely, 2^245257284986 is an apocalyptic number.

245257284986 is a deficient number, since it is larger than the sum of its proper divisors (182691651232).

245257284986 is a wasteful number, since it uses less digits than its factorization.

245257284986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502625373 (or 2502625366 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 62.

The spelling of 245257284986 in words is "two hundred forty-five billion, two hundred fifty-seven million, two hundred eighty-four thousand, nine hundred eighty-six".