6381951325 has 24 divisors (see below), whose sum is σ = 8342035520. Its totient is φ = 4829932800.

The previous prime is 6381951319. The next prime is 6381951349. The reversal of 6381951325 is 5231591836.

It is not a de Polignac number, because 6381951325 - 2¹⁷ = 6381820253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336085 + ... + 354565.

Almost surely, 2^6381951325 is an apocalyptic number.

It is an amenable number.

6381951325 is a deficient number, since it is larger than the sum of its proper divisors (1960084195).

6381951325 is a wasteful number, since it uses less digits than its factorization.

6381951325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19237 (or 19232 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The square root of 6381951325 is about 79887.1161389620. The cubic root of 6381951325 is about 1854.8885875502. Note that the first 3 decimals are identical.

The spelling of 6381951325 in words is "six billion, three hundred eighty-one million, nine hundred fifty-one thousand, three hundred twenty-five".