25545355111 has 8 divisors (see below), whose sum is σ = 26284285664. Its totient is φ = 24808978080.

The previous prime is 25545355091. The next prime is 25545355127. The reversal of 25545355111 is 11155354552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25545355111 - 2⁵ = 25545355079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25545355811) 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 7 ways as a sum of consecutive naturals, for example, 618075 + ... + 658108.

It is an arithmetic number, because the mean of its divisors is an integer number (3285535708).

Almost surely, 2^25545355111 is an apocalyptic number.

25545355111 is a deficient number, since it is larger than the sum of its proper divisors (738930553).

25545355111 is a wasteful number, since it uses less digits than its factorization.

25545355111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276761.

The product of its digits is 75000, while the sum is 37.

The spelling of 25545355111 in words is "twenty-five billion, five hundred forty-five million, three hundred fifty-five thousand, one hundred eleven".