2501256838 has 4 divisors (see below), whose sum is σ = 3751885260. Its totient is φ = 1250628418.

The previous prime is 2501256829. The next prime is 2501256839. The reversal of 2501256838 is 8386521052.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2501256838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2501256839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625314208 + ... + 625314211.

It is an arithmetic number, because the mean of its divisors is an integer number (937971315).

Almost surely, 2^2501256838 is an apocalyptic number.

2501256838 is a deficient number, since it is larger than the sum of its proper divisors (1250628422).

2501256838 is a wasteful number, since it uses less digits than its factorization.

2501256838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250628421.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 2501256838 is about 50012.5668007552. The cubic root of 2501256838 is about 1357.4362090748.

The spelling of 2501256838 in words is "two billion, five hundred one million, two hundred fifty-six thousand, eight hundred thirty-eight".