2495681 has 4 divisors (see below), whose sum is σ = 2514864. Its totient is φ = 2476500.

The previous prime is 2495657. The next prime is 2495723. The reversal of 2495681 is 1865942.

2495681 = T₁₂₆ + T₁₂₇ + ... + T₂₅₆.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2495681 - 2¹⁸ = 2233537 is a prime.

It is a super-2 number, since 2×2495681² = 12456847307522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2495621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9395 + ... + 9656.

It is an arithmetic number, because the mean of its divisors is an integer number (628716).

2^2495681 is an apocalyptic number.

It is an amenable number.

2495681 is a deficient number, since it is larger than the sum of its proper divisors (19183).

2495681 is a wasteful number, since it uses less digits than its factorization.

2495681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19182.

The product of its digits is 17280, while the sum is 35.

The square root of 2495681 is about 1579.7724519690. The cubic root of 2495681 is about 135.6426786472.

The spelling of 2495681 in words is "two million, four hundred ninety-five thousand, six hundred eighty-one".