25340440349259 has 24 divisors (see below), whose sum is σ = 41831984441312. Its totient is φ = 14480200949760.

The previous prime is 25340440349251. The next prime is 25340440349297. The reversal of 25340440349259 is 95294304404352.

It is a happy number.

25340440349259 is a `hidden beast` number, since 2 + 5 + 3 + 4 + 0 + 4 + 40 + 349 + 259 = 666.

It is not a de Polignac number, because 25340440349259 - 2³ = 25340440349251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25340440349251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24606027 + ... + 25615179.

Almost surely, 2^{25340440349259} is an apocalyptic number.

25340440349259 is a deficient number, since it is larger than the sum of its proper divisors (16491544092053).

25340440349259 is a wasteful number, since it uses less digits than its factorization.

25340440349259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407747 (or 1407744 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 54.

The spelling of 25340440349259 in words is "twenty-five trillion, three hundred forty billion, four hundred forty million, three hundred forty-nine thousand, two hundred fifty-nine".