25641137111 has 4 divisors (see below), whose sum is σ = 27149439312. Its totient is φ = 24132834912.

The previous prime is 25641137083. The next prime is 25641137131. The reversal of 25641137111 is 11173114652.

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 25641137111 - 2⁶ = 25641137047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25641137131) 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, 754151075 + ... + 754151108.

It is an arithmetic number, because the mean of its divisors is an integer number (6787359828).

Almost surely, 2^25641137111 is an apocalyptic number.

25641137111 is a deficient number, since it is larger than the sum of its proper divisors (1508302201).

25641137111 is a wasteful number, since it uses less digits than its factorization.

25641137111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508302200.

The product of its digits is 5040, while the sum is 32.

The spelling of 25641137111 in words is "twenty-five billion, six hundred forty-one million, one hundred thirty-seven thousand, one hundred eleven".