25121075615959 has 2 divisors, whose sum is σ = 25121075615960. Its totient is φ = 25121075615958.

The previous prime is 25121075615893. The next prime is 25121075616019. The reversal of 25121075615959 is 95951657012152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25121075615959 - 2¹⁷ = 25121075484887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25121075615059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12560537807979 + 12560537807980.

It is an arithmetic number, because the mean of its divisors is an integer number (12560537807980).

Almost surely, 2^{25121075615959} is an apocalyptic number.

25121075615959 is a deficient number, since it is larger than the sum of its proper divisors (1).

25121075615959 is an equidigital number, since it uses as much as digits as its factorization.

25121075615959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505000, while the sum is 58.

The spelling of 25121075615959 in words is "twenty-five trillion, one hundred twenty-one billion, seventy-five million, six hundred fifteen thousand, nine hundred fifty-nine".