25161111245 has 8 divisors (see below), whose sum is σ = 30217515000. Its totient is φ = 20112768000.

The previous prime is 25161111233. The next prime is 25161111253. The reversal of 25161111245 is 54211116152.

It can be written as a sum of positive squares in 4 ways, for example, as 4321879081 + 20839232164 = 65741^2 + 144358^2 .

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

It is not a de Polignac number, because 25161111245 - 2¹⁶ = 25161045709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2008256 + ... + 2020745.

It is an arithmetic number, because the mean of its divisors is an integer number (3777189375).

Almost surely, 2^25161111245 is an apocalyptic number.

It is an amenable number.

25161111245 is a deficient number, since it is larger than the sum of its proper divisors (5056403755).

25161111245 is a wasteful number, since it uses less digits than its factorization.

25161111245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030255.

The product of its digits is 2400, while the sum is 29.

Adding to 25161111245 its reverse (54211116152), we get a palindrome (79372227397).

The spelling of 25161111245 in words is "twenty-five billion, one hundred sixty-one million, one hundred eleven thousand, two hundred forty-five".