25616434232 has 16 divisors (see below), whose sum is σ = 48032721600. Its totient is φ = 12807708480.

The previous prime is 25616434231. The next prime is 25616434237. The reversal of 25616434232 is 23243461652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25616434231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230444 + ... + 323012.

It is an arithmetic number, because the mean of its divisors is an integer number (3002045100).

Almost surely, 2^25616434232 is an apocalyptic number.

It is an amenable number.

25616434232 is a deficient number, since it is larger than the sum of its proper divisors (22416287368).

25616434232 is a wasteful number, since it uses less digits than its factorization.

25616434232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127166 (or 127162 counting only the distinct ones).

The product of its digits is 207360, while the sum is 38.

Adding to 25616434232 its reverse (23243461652), we get a palindrome (48859895884).

The spelling of 25616434232 in words is "twenty-five billion, six hundred sixteen million, four hundred thirty-four thousand, two hundred thirty-two".