25120993844 has 6 divisors (see below), whose sum is σ = 43961739234. Its totient is φ = 12560496920.

The previous prime is 25120993841. The next prime is 25120993853. The reversal of 25120993844 is 44839902152.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24394691344 + 726302500 = 156188^2 + 26950^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25120993841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3140124227 + ... + 3140124234.

It is an arithmetic number, because the mean of its divisors is an integer number (7326956539).

Almost surely, 2^25120993844 is an apocalyptic number.

It is an amenable number.

25120993844 is a deficient number, since it is larger than the sum of its proper divisors (18840745390).

25120993844 is a wasteful number, since it uses less digits than its factorization.

25120993844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6280248465 (or 6280248463 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 25120993844 in words is "twenty-five billion, one hundred twenty million, nine hundred ninety-three thousand, eight hundred forty-four".