25604242644452 has 24 divisors (see below), whose sum is σ = 45440628666552. Its totient is φ = 12621355718400.

The previous prime is 25604242644439. The next prime is 25604242644529. The reversal of 25604242644452 is 25444624240652.

It can be written as a sum of positive squares in 4 ways, for example, as 3720053417536 + 21884189226916 = 1928744^2 + 4678054^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25604242644452.

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, 18044699 + ... + 19411842.

It is an arithmetic number, because the mean of its divisors is an integer number (1893359527773).

Almost surely, 2^{25604242644452} is an apocalyptic number.

It is an amenable number.

25604242644452 is a deficient number, since it is larger than the sum of its proper divisors (19836386022100).

25604242644452 is a wasteful number, since it uses less digits than its factorization.

25604242644452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37458959 (or 37458957 counting only the distinct ones).

The product of its (nonzero) digits is 14745600, while the sum is 50.

The spelling of 25604242644452 in words is "twenty-five trillion, six hundred four billion, two hundred forty-two million, six hundred forty-four thousand, four hundred fifty-two".