6425555 has 4 divisors (see below), whose sum is σ = 7710672. Its totient is φ = 5140440.

The previous prime is 6425543. The next prime is 6425567. The reversal of 6425555 is 5555246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5555246 = 2 ⋅2777623.

It is an interprime number because it is at equal distance from previous prime (6425543) and next prime (6425567).

It is not a de Polignac number, because 6425555 - 2⁶ = 6425491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642551 + ... + 642560.

It is an arithmetic number, because the mean of its divisors is an integer number (1927668).

Almost surely, 2^6425555 is an apocalyptic number.

6425555 is a deficient number, since it is larger than the sum of its proper divisors (1285117).

6425555 is a wasteful number, since it uses less digits than its factorization.

6425555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285116.

The product of its digits is 30000, while the sum is 32.

The square root of 6425555 is about 2534.8678466539. The cubic root of 6425555 is about 185.9103414185.

The spelling of 6425555 in words is "six million, four hundred twenty-five thousand, five hundred fifty-five".