6257143485 has 20 divisors (see below), whose sum is σ = 11216509788. Its totient is φ = 3337142976.

The previous prime is 6257143427. The next prime is 6257143489. The reversal of 6257143485 is 5843417526.

6257143485 is a `hidden beast` number, since 6 + 25 + 7 + 143 + 485 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2768232996 + 3488910489 = 52614^2 + 59067^2 .

It is not a de Polignac number, because 6257143485 - 2⁶ = 6257143421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6257143485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6257143489) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7724464 + ... + 7725273.

Almost surely, 2^6257143485 is an apocalyptic number.

It is an amenable number.

6257143485 is a deficient number, since it is larger than the sum of its proper divisors (4959366303).

6257143485 is a wasteful number, since it uses less digits than its factorization.

6257143485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15449754 (or 15449745 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 6257143485 is about 79102.1079681193. The cubic root of 6257143485 is about 1842.7172640875.

The spelling of 6257143485 in words is "six billion, two hundred fifty-seven million, one hundred forty-three thousand, four hundred eighty-five".