6425849615 has 4 divisors (see below), whose sum is σ = 7711019544. Its totient is φ = 5140679688.

The previous prime is 6425849561. The next prime is 6425849629. The reversal of 6425849615 is 5169485246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6425849615 - 2¹⁸ = 6425587471 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

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 3 ways as a sum of consecutive naturals, for example, 642584957 + ... + 642584966.

It is an arithmetic number, because the mean of its divisors is an integer number (1927754886).

Almost surely, 2^6425849615 is an apocalyptic number.

6425849615 is a deficient number, since it is larger than the sum of its proper divisors (1285169929).

6425849615 is a wasteful number, since it uses less digits than its factorization.

6425849615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285169928.

The product of its digits is 2073600, while the sum is 50.

The square root of 6425849615 is about 80161.3972869735. The cubic root of 6425849615 is about 1859.1318273669.

The spelling of 6425849615 in words is "six billion, four hundred twenty-five million, eight hundred forty-nine thousand, six hundred fifteen".