25440335604061 has 16 divisors (see below), whose sum is σ = 29201753318400. Its totient is φ = 21710703650688.

The previous prime is 25440335604059. The next prime is 25440335604191. The reversal of 25440335604061 is 16040653304452.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25440335604061 - 2¹ = 25440335604059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25440335603999 and 25440335604017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25440335604011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20316180 + ... + 21532018.

It is an arithmetic number, because the mean of its divisors is an integer number (1825109582400).

Almost surely, 2^{25440335604061} is an apocalyptic number.

It is an amenable number.

25440335604061 is a deficient number, since it is larger than the sum of its proper divisors (3761417714339).

25440335604061 is a wasteful number, since it uses less digits than its factorization.

25440335604061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228908.

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 25440335604061 in words is "twenty-five trillion, four hundred forty billion, three hundred thirty-five million, six hundred four thousand, sixty-one".