6616025 has 12 divisors (see below), whose sum is σ = 8835372. Its totient is φ = 4885440.

The previous prime is 6616021. The next prime is 6616033. The reversal of 6616025 is 5206166.

It can be written as a sum of positive squares in 6 ways, for example, as 559504 + 6056521 = 748^2 + 2461^2 .

It is not a de Polignac number, because 6616025 - 2² = 6616021 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6615985 and 6616003.

It is not an unprimeable number, because it can be changed into a prime (6616021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9854 + ... + 10503.

It is an arithmetic number, because the mean of its divisors is an integer number (736281).

Almost surely, 2^6616025 is an apocalyptic number.

6616025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6616025 is a deficient number, since it is larger than the sum of its proper divisors (2219347).

6616025 is a wasteful number, since it uses less digits than its factorization.

6616025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20380 (or 20375 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 6616025 is about 2572.1634862504. The cubic root of 6616025 is about 187.7294376486.

The spelling of 6616025 in words is "six million, six hundred sixteen thousand, twenty-five".