25715394326387 has 2 divisors, whose sum is σ = 25715394326388. Its totient is φ = 25715394326386.

The previous prime is 25715394326329. The next prime is 25715394326467. The reversal of 25715394326387 is 78362349351752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25715394326387 - 2¹² = 25715394322291 is a prime.

It is a super-2 number, since 2×25715394326387² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25715394326087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12857697163193 + 12857697163194.

It is an arithmetic number, because the mean of its divisors is an integer number (12857697163194).

Almost surely, 2^{25715394326387} is an apocalyptic number.

25715394326387 is a deficient number, since it is larger than the sum of its proper divisors (1).

25715394326387 is an equidigital number, since it uses as much as digits as its factorization.

25715394326387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 228614400, while the sum is 65.

The spelling of 25715394326387 in words is "twenty-five trillion, seven hundred fifteen billion, three hundred ninety-four million, three hundred twenty-six thousand, three hundred eighty-seven".