2525430680681 has 2 divisors, whose sum is σ = 2525430680682. Its totient is φ = 2525430680680.

The previous prime is 2525430680677. The next prime is 2525430680753. The reversal of 2525430680681 is 1860860345252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2267686621456 + 257744059225 = 1505884^2 + 507685^2 .

It is a cyclic number.

It is not a de Polignac number, because 2525430680681 - 2² = 2525430680677 is a prime.

It is a super-2 number, since 2×2525430680681² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2525430680581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262715340340 + 1262715340341.

It is an arithmetic number, because the mean of its divisors is an integer number (1262715340341).

Almost surely, 2^{2525430680681} is an apocalyptic number.

It is an amenable number.

2525430680681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2525430680681 is an equidigital number, since it uses as much as digits as its factorization.

2525430680681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2764800, while the sum is 50.

The spelling of 2525430680681 in words is "two trillion, five hundred twenty-five billion, four hundred thirty million, six hundred eighty thousand, six hundred eighty-one".