6425551 has 4 divisors (see below), whose sum is σ = 7009704. Its totient is φ = 5841400.

The previous prime is 6425543. The next prime is 6425567. The reversal of 6425551 is 1555246.

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 6425551 - 2³ = 6425543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6425521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292060 + ... + 292081.

It is an arithmetic number, because the mean of its divisors is an integer number (1752426).

Almost surely, 2^6425551 is an apocalyptic number.

6425551 is a deficient number, since it is larger than the sum of its proper divisors (584153).

6425551 is a wasteful number, since it uses less digits than its factorization.

6425551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584152.

The product of its digits is 6000, while the sum is 28.

The square root of 6425551 is about 2534.8670576581. The cubic root of 6425551 is about 185.9103028413.

The spelling of 6425551 in words is "six million, four hundred twenty-five thousand, five hundred fifty-one".