25120024812 has 36 divisors (see below), whose sum is σ = 65046572136. Its totient is φ = 8169113280.

The previous prime is 25120024777. The next prime is 25120024819. The reversal of 25120024812 is 21842002152.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (25120024819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8508018 + ... + 8510969.

It is an arithmetic number, because the mean of its divisors is an integer number (1806849226).

Almost surely, 2^25120024812 is an apocalyptic number.

It is an amenable number.

25120024812 is an abundant number, since it is smaller than the sum of its proper divisors (39926547324).

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

25120024812 is a wasteful number, since it uses less digits than its factorization.

25120024812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17019038 (or 17019033 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 25120024812 its reverse (21842002152), we get a palindrome (46962026964).

The spelling of 25120024812 in words is "twenty-five billion, one hundred twenty million, twenty-four thousand, eight hundred twelve".