25188401241 has 12 divisors (see below), whose sum is σ = 36384768420. Its totient is φ = 16791564960.

The previous prime is 25188401221. The next prime is 25188401279. The reversal of 25188401241 is 14210488152.

25188401241 is a `hidden beast` number, since 2 + 5 + 1 + 8 + 8 + 401 + 241 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19017513216 + 6170888025 = 137904^2 + 78555^2 .

It is not a de Polignac number, because 25188401241 - 2⁹ = 25188400729 is a prime.

It is a super-2 number, since 2×25188401241² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25188401196 and 25188401205.

It is not an unprimeable number, because it can be changed into a prime (25188401221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259411 + ... + 343031.

It is an arithmetic number, because the mean of its divisors is an integer number (3032064035).

Almost surely, 2^25188401241 is an apocalyptic number.

It is an amenable number.

25188401241 is a deficient number, since it is larger than the sum of its proper divisors (11196367179).

25188401241 is a wasteful number, since it uses less digits than its factorization.

25188401241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117096 (or 117093 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

Adding to 25188401241 its reverse (14210488152), we get a palindrome (39398889393).

The spelling of 25188401241 in words is "twenty-five billion, one hundred eighty-eight million, four hundred one thousand, two hundred forty-one".