2505578 has 8 divisors (see below), whose sum is σ = 3795168. Its totient is φ = 1240524.

The previous prime is 2505557. The next prime is 2505611. The reversal of 2505578 is 8755052.

It is a happy number.

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

It is a super-2 number, since 2×2505578² = 12555842228168, which contains 22 as substring.

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, 5876 + ... + 6287.

It is an arithmetic number, because the mean of its divisors is an integer number (474396).

2^2505578 is an apocalyptic number.

2505578 is a deficient number, since it is larger than the sum of its proper divisors (1289590).

2505578 is a wasteful number, since it uses less digits than its factorization.

2505578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12268.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 2505578 is about 1582.9017657454. The cubic root of 2505578 is about 135.8217459932.

The spelling of 2505578 in words is "two million, five hundred five thousand, five hundred seventy-eight".