25040111225 has 6 divisors (see below), whose sum is σ = 31049737950. Its totient is φ = 20032088960.

The previous prime is 25040111183. The next prime is 25040111227. The reversal of 25040111225 is 52211104052.

It can be written as a sum of positive squares in 3 ways, for example, as 2878429801 + 22161681424 = 53651^2 + 148868^2 .

It is not a de Polignac number, because 25040111225 - 2¹⁶ = 25040045689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25040111225.

It is not an unprimeable number, because it can be changed into a prime (25040111227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 500802200 + ... + 500802249.

It is an arithmetic number, because the mean of its divisors is an integer number (5174956325).

Almost surely, 2^25040111225 is an apocalyptic number.

25040111225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25040111225 is a deficient number, since it is larger than the sum of its proper divisors (6009626725).

25040111225 is a wasteful number, since it uses less digits than its factorization.

25040111225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001604459 (or 1001604454 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 25040111225 its reverse (52211104052), we get a palindrome (77251215277).

The spelling of 25040111225 in words is "twenty-five billion, forty million, one hundred eleven thousand, two hundred twenty-five".