25453111145 has 32 divisors (see below), whose sum is σ = 38107791360. Its totient is φ = 15855503040.

The previous prime is 25453111141. The next prime is 25453111163. The reversal of 25453111145 is 54111135452.

It is not a de Polignac number, because 25453111145 - 2² = 25453111141 is a prime.

It is a super-2 number, since 2×25453111145² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25453111141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 531044 + ... + 576986.

It is an arithmetic number, because the mean of its divisors is an integer number (1190868480).

Almost surely, 2^25453111145 is an apocalyptic number.

It is an amenable number.

25453111145 is a deficient number, since it is larger than the sum of its proper divisors (12654680215).

25453111145 is a wasteful number, since it uses less digits than its factorization.

25453111145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47405.

The product of its digits is 12000, while the sum is 32.

Adding to 25453111145 its reverse (54111135452), we get a palindrome (79564246597).

The spelling of 25453111145 in words is "twenty-five billion, four hundred fifty-three million, one hundred eleven thousand, one hundred forty-five".