2495665 has 4 divisors (see below), whose sum is σ = 2994804. Its totient is φ = 1996528.

The previous prime is 2495657. The next prime is 2495723. The reversal of 2495665 is 5665942.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1327104 + 1168561 = 1152^2 + 1081^2 .

It is a cyclic number.

It is not a de Polignac number, because 2495665 - 2³ = 2495657 is a prime.

It is a d-powerful number, because it can be written as 2²⁰ + 4¹⁰ + 9² + 5² + 6 + 6⁵ + 5⁸ .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249562 + ... + 249571.

It is an arithmetic number, because the mean of its divisors is an integer number (748701).

2^2495665 is an apocalyptic number.

It is an amenable number.

2495665 is a deficient number, since it is larger than the sum of its proper divisors (499139).

2495665 is an equidigital number, since it uses as much as digits as its factorization.

2495665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499138.

The product of its digits is 64800, while the sum is 37.

The square root of 2495665 is about 1579.7673879404. The cubic root of 2495665 is about 135.6423887747.

It can be divided in two parts, 249566 and 5, that added together give a triangular number (249571 = T₇₀₆).

The spelling of 2495665 in words is "two million, four hundred ninety-five thousand, six hundred sixty-five".