2505819 has 8 divisors (see below), whose sum is σ = 3396112. Its totient is φ = 1643040.

The previous prime is 2505809. The next prime is 2505829. The reversal of 2505819 is 9185052.

It is an interprime number because it is at equal distance from previous prime (2505809) and next prime (2505829).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2505819 - 2⁷ = 2505691 is a prime.

It is a super-2 number, since 2×2505819² = 12558257721522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2505809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6664 + ... + 7029.

It is an arithmetic number, because the mean of its divisors is an integer number (424514).

2^2505819 is an apocalyptic number.

2505819 is a deficient number, since it is larger than the sum of its proper divisors (890293).

2505819 is a wasteful number, since it uses less digits than its factorization.

2505819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13757.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 2505819 is about 1582.9778899277. The cubic root of 2505819 is about 135.8261005429.

The spelling of 2505819 in words is "two million, five hundred five thousand, eight hundred nineteen".