6257500640 has 24 divisors (see below), whose sum is σ = 14783345640. Its totient is φ = 2503000192.

The previous prime is 6257500637. The next prime is 6257500649. The reversal of 6257500640 is 460057526.

It is a self number, because there is not a number n which added to its sum of digits gives 6257500640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6257500649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19554530 + ... + 19554849.

It is an arithmetic number, because the mean of its divisors is an integer number (615972735).

Almost surely, 2^6257500640 is an apocalyptic number.

It is an amenable number.

6257500640 is an abundant number, since it is smaller than the sum of its proper divisors (8525845000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6257500640 is a wasteful number, since it uses less digits than its factorization.

6257500640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39109394 (or 39109386 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 6257500640 is about 79104.3654926831. The cubic root of 6257500640 is about 1842.7523239176.

The spelling of 6257500640 in words is "six billion, two hundred fifty-seven million, five hundred thousand, six hundred forty".