2425613123821 has 2 divisors, whose sum is σ = 2425613123822. Its totient is φ = 2425613123820.

The previous prime is 2425613123803. The next prime is 2425613123849. The reversal of 2425613123821 is 1283213165242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2247558662596 + 178054461225 = 1499186^2 + 421965^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425613123821 - 2²⁵ = 2425579569389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2425613123321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1212806561910 + 1212806561911.

It is an arithmetic number, because the mean of its divisors is an integer number (1212806561911).

Almost surely, 2^{2425613123821} is an apocalyptic number.

It is an amenable number.

2425613123821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2425613123821 is an equidigital number, since it uses as much as digits as its factorization.

2425613123821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 40.

The spelling of 2425613123821 in words is "two trillion, four hundred twenty-five billion, six hundred thirteen million, one hundred twenty-three thousand, eight hundred twenty-one".