25994350947 has 8 divisors (see below), whose sum is σ = 34782477840. Its totient is φ = 17267895680.

The previous prime is 25994350937. The next prime is 25994351051. The reversal of 25994350947 is 74905349952.

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 25994350947 - 2⁴ = 25994350931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25994350937) 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, 15416922 + ... + 15418607.

It is an arithmetic number, because the mean of its divisors is an integer number (4347809730).

Almost surely, 2^25994350947 is an apocalyptic number.

25994350947 is a deficient number, since it is larger than the sum of its proper divisors (8788126893).

25994350947 is a wasteful number, since it uses less digits than its factorization.

25994350947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30835813.

The product of its (nonzero) digits is 12247200, while the sum is 57.

The spelling of 25994350947 in words is "twenty-five billion, nine hundred ninety-four million, three hundred fifty thousand, nine hundred forty-seven".