25444332012 has 24 divisors (see below), whose sum is σ = 64767390912. Its totient is φ = 7710403600.

The previous prime is 25444331977. The next prime is 25444332037. The reversal of 25444332012 is 21023344452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96379914 + ... + 96380177.

It is an arithmetic number, because the mean of its divisors is an integer number (2698641288).

Almost surely, 2^25444332012 is an apocalyptic number.

25444332012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25444332012 is an abundant number, since it is smaller than the sum of its proper divisors (39323058900).

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

25444332012 is a wasteful number, since it uses less digits than its factorization.

25444332012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192760109 (or 192760107 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 25444332012 its reverse (21023344452), we get a palindrome (46467676464).

The spelling of 25444332012 in words is "twenty-five billion, four hundred forty-four million, three hundred thirty-two thousand, twelve".