25404116331 has 32 divisors (see below), whose sum is σ = 38813552640. Its totient is φ = 14629428000.

The previous prime is 25404116327. The next prime is 25404116333. The reversal of 25404116331 is 13361140452.

It is not a de Polignac number, because 25404116331 - 2² = 25404116327 is a prime.

It is a super-2 number, since 2×25404116331² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25404116333) 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, 3780 + ... + 225438.

It is an arithmetic number, because the mean of its divisors is an integer number (1212923520).

Almost surely, 2^25404116331 is an apocalyptic number.

25404116331 is a deficient number, since it is larger than the sum of its proper divisors (13409436309).

25404116331 is a wasteful number, since it uses less digits than its factorization.

25404116331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221847.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 25404116331 its reverse (13361140452), we get a palindrome (38765256783).

The spelling of 25404116331 in words is "twenty-five billion, four hundred four million, one hundred sixteen thousand, three hundred thirty-one".