2541262681 has 4 divisors (see below), whose sum is σ = 2542482432. Its totient is φ = 2540042932.

The previous prime is 2541262667. The next prime is 2541262687. The reversal of 2541262681 is 1862621452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2541262681 - 2⁵ = 2541262649 is a prime.

It is a super-2 number, since 2×2541262681² = 12916032027686615522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2541262681.

It is not an unprimeable number, because it can be changed into a prime (2541262687) 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, 606745 + ... + 610918.

It is an arithmetic number, because the mean of its divisors is an integer number (635620608).

Almost surely, 2^2541262681 is an apocalyptic number.

It is an amenable number.

2541262681 is a deficient number, since it is larger than the sum of its proper divisors (1219751).

2541262681 is a wasteful number, since it uses less digits than its factorization.

2541262681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219750.

The product of its digits is 46080, while the sum is 37.

The square root of 2541262681 is about 50410.9381087081. The cubic root of 2541262681 is about 1364.6350432935.

The spelling of 2541262681 in words is "two billion, five hundred forty-one million, two hundred sixty-two thousand, six hundred eighty-one".