25670667838 has 8 divisors (see below), whose sum is σ = 38527269480. Its totient is φ = 12828244680.

The previous prime is 25670667833. The next prime is 25670667851. The reversal of 25670667838 is 83876607652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25670667833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3540093 + ... + 3547336.

It is an arithmetic number, because the mean of its divisors is an integer number (4815908685).

Almost surely, 2^25670667838 is an apocalyptic number.

25670667838 is a deficient number, since it is larger than the sum of its proper divisors (12856601642).

25670667838 is a wasteful number, since it uses less digits than its factorization.

25670667838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7089242.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 25670667838 in words is "twenty-five billion, six hundred seventy million, six hundred sixty-seven thousand, eight hundred thirty-eight".