25590440552649 has 16 divisors (see below), whose sum is σ = 39824636971008. Its totient is φ = 14311978910352.

The previous prime is 25590440552647. The next prime is 25590440552681. The reversal of 25590440552649 is 94625504409552.

It is not a de Polignac number, because 25590440552649 - 2¹ = 25590440552647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25590440552592 and 25590440552601.

It is not an unprimeable number, because it can be changed into a prime (25590440552647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12963748027 + ... + 12963750000.

It is an arithmetic number, because the mean of its divisors is an integer number (2489039810688).

Almost surely, 2^{25590440552649} is an apocalyptic number.

It is an amenable number.

25590440552649 is a deficient number, since it is larger than the sum of its proper divisors (14234196418359).

25590440552649 is a wasteful number, since it uses less digits than its factorization.

25590440552649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25927498084.

The product of its (nonzero) digits is 77760000, while the sum is 60.

The spelling of 25590440552649 in words is "twenty-five trillion, five hundred ninety billion, four hundred forty million, five hundred fifty-two thousand, six hundred forty-nine".