25443315012 has 24 divisors (see below), whose sum is σ = 60083011296. Its totient is φ = 8378922688.

The previous prime is 25443314999. The next prime is 25443315059. The reversal of 25443315012 is 21051334452.

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, 12771753 + ... + 12773744.

It is an arithmetic number, because the mean of its divisors is an integer number (2503458804).

Almost surely, 2^25443315012 is an apocalyptic number.

It is an amenable number.

25443315012 is an abundant number, since it is smaller than the sum of its proper divisors (34639696284).

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

25443315012 is a wasteful number, since it uses less digits than its factorization.

25443315012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25545587 (or 25545585 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 25443315012 its reverse (21051334452), we get a palindrome (46494649464).

The spelling of 25443315012 in words is "twenty-five billion, four hundred forty-three million, three hundred fifteen thousand, twelve".