25907989249 has 8 divisors (see below), whose sum is σ = 26241696000. Its totient is φ = 25574426592.

The previous prime is 25907989241. The next prime is 25907989313. The reversal of 25907989249 is 94298970952.

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 25907989249 - 2³ = 25907989241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25907989241) 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, 352692 + ... + 419770.

It is an arithmetic number, because the mean of its divisors is an integer number (3280212000).

Almost surely, 2^25907989249 is an apocalyptic number.

It is an amenable number.

25907989249 is a deficient number, since it is larger than the sum of its proper divisors (333706751).

25907989249 is an equidigital number, since it uses as much as digits as its factorization.

25907989249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72047.

The product of its (nonzero) digits is 29393280, while the sum is 64.

The spelling of 25907989249 in words is "twenty-five billion, nine hundred seven million, nine hundred eighty-nine thousand, two hundred forty-nine".