2425681 has 2 divisors, whose sum is σ = 2425682. Its totient is φ = 2425680.

The previous prime is 2425669. The next prime is 2425693. The reversal of 2425681 is 1865242.

It is a balanced prime because it is at equal distance from previous prime (2425669) and next prime (2425693).

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 576081 = 1360^2 + 759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2425681 is a prime.

It is a super-2 number, since 2×2425681² = 11767856627522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2425081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1212840 + 1212841.

It is an arithmetic number, because the mean of its divisors is an integer number (1212841).

2^2425681 is an apocalyptic number.

It is an amenable number.

2425681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2425681 is an equidigital number, since it uses as much as digits as its factorization.

2425681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 28.

The square root of 2425681 is about 1557.4597908132. The cubic root of 2425681 is about 134.3624441847.

The spelling of 2425681 in words is "two million, four hundred twenty-five thousand, six hundred eighty-one".