25440016633512 has 32 divisors (see below), whose sum is σ = 68492352475680. Its totient is φ = 7827697425600.

The previous prime is 25440016633469. The next prime is 25440016633513. The reversal of 25440016633512 is 21533661004452.

It is not an unprimeable number, because it can be changed into a prime (25440016633513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40769257114 + ... + 40769257737.

It is an arithmetic number, because the mean of its divisors is an integer number (2140386014865).

Almost surely, 2^{25440016633512} is an apocalyptic number.

It is an amenable number.

25440016633512 is an abundant number, since it is smaller than the sum of its proper divisors (43052335842168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25440016633512 is a wasteful number, since it uses less digits than its factorization.

25440016633512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81538514873 (or 81538514869 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 25440016633512 its reverse (21533661004452), we get a palindrome (46973677637964).

The spelling of 25440016633512 in words is "twenty-five trillion, four hundred forty billion, sixteen million, six hundred thirty-three thousand, five hundred twelve".