25555306242772 has 6 divisors (see below), whose sum is σ = 44721785924858. Its totient is φ = 12777653121384.

The previous prime is 25555306242709. The next prime is 25555306242803. The reversal of 25555306242772 is 27724260355552.

It can be written as a sum of positive squares in only one way, i.e., 23051867127696 + 2503439115076 = 4801236^2 + 1582226^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194413280343 + ... + 3194413280350.

Almost surely, 2^{25555306242772} is an apocalyptic number.

It is an amenable number.

25555306242772 is a deficient number, since it is larger than the sum of its proper divisors (19166479682086).

25555306242772 is a wasteful number, since it uses less digits than its factorization.

25555306242772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6388826560697 (or 6388826560695 counting only the distinct ones).

The product of its (nonzero) digits is 35280000, while the sum is 55.

The spelling of 25555306242772 in words is "twenty-five trillion, five hundred fifty-five billion, three hundred six million, two hundred forty-two thousand, seven hundred seventy-two".