2505081 has 8 divisors (see below), whose sum is σ = 3396960. Its totient is φ = 1641632.

The previous prime is 2505077. The next prime is 2505101. The reversal of 2505081 is 1805052.

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

It is a cyclic number.

It is not a de Polignac number, because 2505081 - 2² = 2505077 is a prime.

It is a super-2 number, since 2×2505081² = 12550861633122, which contains 22 as substring.

It is a Curzon number.

2505081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2500081) 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, 6900 + ... + 7253.

It is an arithmetic number, because the mean of its divisors is an integer number (424620).

2^2505081 is an apocalyptic number.

It is an amenable number.

2505081 is a deficient number, since it is larger than the sum of its proper divisors (891879).

2505081 is a wasteful number, since it uses less digits than its factorization.

2505081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14215.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2505081 is about 1582.7447678005. The cubic root of 2505081 is about 135.8127649821.

The spelling of 2505081 in words is "two million, five hundred five thousand, eighty-one".