25605098419 has 8 divisors (see below), whose sum is σ = 26667512928. Its totient is φ = 24562177920.

The previous prime is 25605098353. The next prime is 25605098447. The reversal of 25605098419 is 91489050652.

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 25605098419 - 2¹⁷ = 25604967347 is a prime.

It is a super-2 number, since 2×25605098419² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25605098219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4870822 + ... + 4876075.

It is an arithmetic number, because the mean of its divisors is an integer number (3333439116).

Almost surely, 2^25605098419 is an apocalyptic number.

25605098419 is a deficient number, since it is larger than the sum of its proper divisors (1062414509).

25605098419 is an equidigital number, since it uses as much as digits as its factorization.

25605098419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747005.

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 25605098419 in words is "twenty-five billion, six hundred five million, ninety-eight thousand, four hundred nineteen".