6725551 has 4 divisors (see below), whose sum is σ = 7686352. Its totient is φ = 5764752.

The previous prime is 6725549. The next prime is 6725597. The reversal of 6725551 is 1555276.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6725551 - 2¹ = 6725549 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 (6725531) 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, 480390 + ... + 480403.

It is an arithmetic number, because the mean of its divisors is an integer number (1921588).

Almost surely, 2^6725551 is an apocalyptic number.

6725551 is a deficient number, since it is larger than the sum of its proper divisors (960801).

6725551 is an equidigital number, since it uses as much as digits as its factorization.

6725551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960800.

The product of its digits is 10500, while the sum is 31.

The square root of 6725551 is about 2593.3667307190. The cubic root of 6725551 is about 188.7597050694.

The spelling of 6725551 in words is "six million, seven hundred twenty-five thousand, five hundred fifty-one".