25917892741537 has 2 divisors, whose sum is σ = 25917892741538. Its totient is φ = 25917892741536.

The previous prime is 25917892741513. The next prime is 25917892741547. The reversal of 25917892741537 is 73514729871952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17919381130641 + 7998511610896 = 4233129^2 + 2828164^2 .

It is a cyclic number.

It is not a de Polignac number, because 25917892741537 - 2¹⁹ = 25917892217249 is a prime.

It is not a weakly prime, because it can be changed into another prime (25917892741547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12958946370768 + 12958946370769.

It is an arithmetic number, because the mean of its divisors is an integer number (12958946370769).

Almost surely, 2^{25917892741537} is an apocalyptic number.

It is an amenable number.

25917892741537 is a deficient number, since it is larger than the sum of its proper divisors (1).

25917892741537 is an equidigital number, since it uses as much as digits as its factorization.

25917892741537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 266716800, while the sum is 70.

The spelling of 25917892741537 in words is "twenty-five trillion, nine hundred seventeen billion, eight hundred ninety-two million, seven hundred forty-one thousand, five hundred thirty-seven".