25341220145 has 4 divisors (see below), whose sum is σ = 30409464180. Its totient is φ = 20272976112.

The previous prime is 25341220139. The next prime is 25341220183. The reversal of 25341220145 is 54102214352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4346369329 + 20994850816 = 65927^2 + 144896^2 .

It is a cyclic number.

It is not a de Polignac number, because 25341220145 - 2⁶ = 25341220081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2534122010 + ... + 2534122019.

It is an arithmetic number, because the mean of its divisors is an integer number (7602366045).

Almost surely, 2^25341220145 is an apocalyptic number.

It is an amenable number.

25341220145 is a deficient number, since it is larger than the sum of its proper divisors (5068244035).

25341220145 is an equidigital number, since it uses as much as digits as its factorization.

25341220145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5068244034.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 25341220145 its reverse (54102214352), we get a palindrome (79443434497).

The spelling of 25341220145 in words is "twenty-five billion, three hundred forty-one million, two hundred twenty thousand, one hundred forty-five".