25344452616 has 64 divisors (see below), whose sum is σ = 72482256000. Its totient is φ = 7234318848.

The previous prime is 25344452611. The next prime is 25344452681. The reversal of 25344452616 is 61625444352.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (25344452611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104326 + ... + 248138.

It is an arithmetic number, because the mean of its divisors is an integer number (1132535250).

Almost surely, 2^25344452616 is an apocalyptic number.

It is an amenable number.

25344452616 is an abundant number, since it is smaller than the sum of its proper divisors (47137803384).

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

25344452616 is a wasteful number, since it uses less digits than its factorization.

25344452616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144878 (or 144874 counting only the distinct ones).

The product of its digits is 691200, while the sum is 42.

Adding to 25344452616 its reverse (61625444352), we get a palindrome (86969896968).

The spelling of 25344452616 in words is "twenty-five billion, three hundred forty-four million, four hundred fifty-two thousand, six hundred sixteen".