6425335021 has 16 divisors (see below), whose sum is σ = 7469521920. Its totient is φ = 5412862080.

The previous prime is 6425335019. The next prime is 6425335043. The reversal of 6425335021 is 1205335246.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6425335021 - 2¹ = 6425335019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6425335121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609225 + ... + 619681.

It is an arithmetic number, because the mean of its divisors is an integer number (466845120).

Almost surely, 2^6425335021 is an apocalyptic number.

6425335021 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6425335021 is a deficient number, since it is larger than the sum of its proper divisors (1044186899).

6425335021 is a wasteful number, since it uses less digits than its factorization.

6425335021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11964.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 6425335021 is about 80158.1874857460. The cubic root of 6425335021 is about 1859.0821984628.

The spelling of 6425335021 in words is "six billion, four hundred twenty-five million, three hundred thirty-five thousand, twenty-one".