25131768625099 has 2 divisors, whose sum is σ = 25131768625100. Its totient is φ = 25131768625098.

The previous prime is 25131768625097. The next prime is 25131768625163. The reversal of 25131768625099 is 99052686713152.

It is an a-pointer prime, because the next prime (25131768625163) can be obtained adding 25131768625099 to its sum of digits (64).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25131768625099 - 2¹ = 25131768625097 is a prime.

Together with 25131768625097, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25131768625099.

It is not a weakly prime, because it can be changed into another prime (25131768625097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12565884312549 + 12565884312550.

It is an arithmetic number, because the mean of its divisors is an integer number (12565884312550).

Almost surely, 2^{25131768625099} is an apocalyptic number.

25131768625099 is a deficient number, since it is larger than the sum of its proper divisors (1).

25131768625099 is an equidigital number, since it uses as much as digits as its factorization.

25131768625099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 25131768625099 in words is "twenty-five trillion, one hundred thirty-one billion, seven hundred sixty-eight million, six hundred twenty-five thousand, ninety-nine".