6424380625 has 20 divisors (see below), whose sum is σ = 8645448196. Its totient is φ = 4744152000.

The previous prime is 6424380623. The next prime is 6424380647. The reversal of 6424380625 is 5260834246.

It can be written as a sum of positive squares in 10 ways, for example, as 4544377744 + 1880002881 = 67412^2 + 43359^2 .

It is not a de Polignac number, because 6424380625 - 2¹ = 6424380623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6424380623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 387222 + ... + 403471.

Almost surely, 2^6424380625 is an apocalyptic number.

6424380625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6424380625 is a deficient number, since it is larger than the sum of its proper divisors (2221067571).

6424380625 is an equidigital number, since it uses as much as digits as its factorization.

6424380625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790726 (or 790711 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The square root of 6424380625 is about 80152.2340611913. The cubic root of 6424380625 is about 1858.9901467921.

The spelling of 6424380625 in words is "six billion, four hundred twenty-four million, three hundred eighty thousand, six hundred twenty-five".