6402825 has 72 divisors (see below), whose sum is σ = 13540800. Its totient is φ = 2851200.

The previous prime is 6402817. The next prime is 6402839. The reversal of 6402825 is 5282046.

It is not a de Polignac number, because 6402825 - 2³ = 6402817 is a prime.

6402825 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 32076 + ... + 32274.

Almost surely, 2^6402825 is an apocalyptic number.

6402825 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6402825 is an abundant number, since it is smaller than the sum of its proper divisors (7137975).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6402825 is a wasteful number, since it uses less digits than its factorization.

6402825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 6402825 is about 2530.3804061840. The cubic root of 6402825 is about 185.6908670104.

It can be divided in two parts, 6402 and 825, that added together give a palindrome (7227).

The spelling of 6402825 in words is "six million, four hundred two thousand, eight hundred twenty-five".