25782202011 has 4 divisors (see below), whose sum is σ = 34376269352. Its totient is φ = 17188134672.

The previous prime is 25782202003. The next prime is 25782202031. The reversal of 25782202011 is 11020228752.

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

It is not a de Polignac number, because 25782202011 - 2³ = 25782202003 is a prime.

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 25782202011.

It is not an unprimeable number, because it can be changed into a prime (25782202031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4297033666 + ... + 4297033671.

It is an arithmetic number, because the mean of its divisors is an integer number (8594067338).

Almost surely, 2^25782202011 is an apocalyptic number.

25782202011 is a deficient number, since it is larger than the sum of its proper divisors (8594067341).

25782202011 is an equidigital number, since it uses as much as digits as its factorization.

25782202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8594067340.

The product of its (nonzero) digits is 4480, while the sum is 30.

The spelling of 25782202011 in words is "twenty-five billion, seven hundred eighty-two million, two hundred two thousand, eleven".