2539946425531 has 4 divisors (see below), whose sum is σ = 2548985381064. Its totient is φ = 2530907470000.

The previous prime is 2539946425469. The next prime is 2539946425543. The reversal of 2539946425531 is 1355246499352.

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

It is a cyclic number.

It is not a de Polignac number, because 2539946425531 - 2⁹ = 2539946425019 is a prime.

It is a super-2 number, since 2×2539946425531² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2539946425571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4519477345 + ... + 4519477906.

It is an arithmetic number, because the mean of its divisors is an integer number (637246345266).

Almost surely, 2^{2539946425531} is an apocalyptic number.

2539946425531 is a deficient number, since it is larger than the sum of its proper divisors (9038955533).

2539946425531 is an equidigital number, since it uses as much as digits as its factorization.

2539946425531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9038955532.

The product of its digits is 34992000, while the sum is 58.

The spelling of 2539946425531 in words is "two trillion, five hundred thirty-nine billion, nine hundred forty-six million, four hundred twenty-five thousand, five hundred thirty-one".