2506738857 has 8 divisors (see below), whose sum is σ = 3819792576. Its totient is φ = 1432422192.

The previous prime is 2506738853. The next prime is 2506738909. The reversal of 2506738857 is 7588376052.

2506738857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2506738857 - 2² = 2506738853 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2506738853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59684238 + ... + 59684279.

It is an arithmetic number, because the mean of its divisors is an integer number (477474072).

Almost surely, 2^2506738857 is an apocalyptic number.

It is an amenable number.

2506738857 is a deficient number, since it is larger than the sum of its proper divisors (1313053719).

2506738857 is a wasteful number, since it uses less digits than its factorization.

2506738857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119368527.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The square root of 2506738857 is about 50067.3432189087. The cubic root of 2506738857 is about 1358.4271856999.

The spelling of 2506738857 in words is "two billion, five hundred six million, seven hundred thirty-eight thousand, eight hundred fifty-seven".