2449657125557 has 2 divisors, whose sum is σ = 2449657125558. Its totient is φ = 2449657125556.

The previous prime is 2449657125511. The next prime is 2449657125583. The reversal of 2449657125557 is 7555217569442.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1321375539121 + 1128281586436 = 1149511^2 + 1062206^2 .

It is a cyclic number.

It is not a de Polignac number, because 2449657125557 - 2⁸ = 2449657125301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2449657125557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2449657125457) 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, 1224828562778 + 1224828562779.

It is an arithmetic number, because the mean of its divisors is an integer number (1224828562779).

Almost surely, 2^{2449657125557} is an apocalyptic number.

It is an amenable number.

2449657125557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2449657125557 is an equidigital number, since it uses as much as digits as its factorization.

2449657125557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840000, while the sum is 62.

The spelling of 2449657125557 in words is "two trillion, four hundred forty-nine billion, six hundred fifty-seven million, one hundred twenty-five thousand, five hundred fifty-seven".