25708345409 has 8 divisors (see below), whose sum is σ = 27063687840. Its totient is φ = 24353230176.

The previous prime is 25708345391. The next prime is 25708345417. The reversal of 25708345409 is 90454380752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25708345409 - 2¹⁶ = 25708279873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25708345499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206909 + ... + 306965.

It is an arithmetic number, because the mean of its divisors is an integer number (3382960980).

Almost surely, 2^25708345409 is an apocalyptic number.

It is an amenable number.

25708345409 is a deficient number, since it is larger than the sum of its proper divisors (1355342431).

25708345409 is a wasteful number, since it uses less digits than its factorization.

25708345409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113599.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 25708345409 in words is "twenty-five billion, seven hundred eight million, three hundred forty-five thousand, four hundred nine".