2639225 has 12 divisors (see below), whose sum is σ = 3294060. Its totient is φ = 2097600.

The previous prime is 2639213. The next prime is 2639239. The reversal of 2639225 is 5229362.

It can be written as a sum of positive squares in 6 ways, for example, as 1849 + 2637376 = 43^2 + 1624^2 .

It is not a de Polignac number, because 2639225 - 2¹⁰ = 2638201 is a prime.

It is a super-3 number, since 3×2639225³ = 55150633309453546875, which contains 333 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 2⁵ + 6³ + 3⁷ + 9⁶ + 2¹³ + 2²¹ + 5 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5495 + ... + 5955.

It is an arithmetic number, because the mean of its divisors is an integer number (274505).

2^2639225 is an apocalyptic number.

2639225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2639225 is a deficient number, since it is larger than the sum of its proper divisors (654835).

2639225 is a wasteful number, since it uses less digits than its factorization.

2639225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 695 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 2639225 is about 1624.5691736581. The cubic root of 2639225 is about 138.1949390897.

The spelling of 2639225 in words is "two million, six hundred thirty-nine thousand, two hundred twenty-five".