6425655 has 16 divisors (see below), whose sum is σ = 10383360. Its totient is φ = 3392928.

The previous prime is 6425651. The next prime is 6425663. The reversal of 6425655 is 5565246.

It is a happy number.

It is not a de Polignac number, because 6425655 - 2² = 6425651 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6³ + 4⁹ + 2²² + 5² + 6³ + 5⁶ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6425651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535 + ... + 3624.

It is an arithmetic number, because the mean of its divisors is an integer number (648960).

Almost surely, 2^6425655 is an apocalyptic number.

6425655 is a deficient number, since it is larger than the sum of its proper divisors (3957705).

6425655 is a wasteful number, since it uses less digits than its factorization.

6425655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4270.

The product of its digits is 36000, while the sum is 33.

The square root of 6425655 is about 2534.8875714714. The cubic root of 6425655 is about 185.9113058456.

The spelling of 6425655 in words is "six million, four hundred twenty-five thousand, six hundred fifty-five".