25966292290537 has 2 divisors, whose sum is σ = 25966292290538. Its totient is φ = 25966292290536.

The previous prime is 25966292290531. The next prime is 25966292290571. The reversal of 25966292290537 is 73509229266952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21512120029456 + 4454172261081 = 4638116^2 + 2110491^2 .

It is a cyclic number.

It is not a de Polignac number, because 25966292290537 - 2²⁷ = 25966158072809 is a prime.

It is not a weakly prime, because it can be changed into another prime (25966292290531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12983146145268 + 12983146145269.

It is an arithmetic number, because the mean of its divisors is an integer number (12983146145269).

Almost surely, 2^{25966292290537} is an apocalyptic number.

It is an amenable number.

25966292290537 is a deficient number, since it is larger than the sum of its proper divisors (1).

25966292290537 is an equidigital number, since it uses as much as digits as its factorization.

25966292290537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220449600, while the sum is 67.

The spelling of 25966292290537 in words is "twenty-five trillion, nine hundred sixty-six billion, two hundred ninety-two million, two hundred ninety thousand, five hundred thirty-seven".