25026265277491 has 2 divisors, whose sum is σ = 25026265277492. Its totient is φ = 25026265277490.

The previous prime is 25026265277483. The next prime is 25026265277543. The reversal of 25026265277491 is 19477256262052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25026265277491 - 2³ = 25026265277483 is a prime.

It is not a weakly prime, because it can be changed into another prime (25026265247491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12513132638745 + 12513132638746.

It is an arithmetic number, because the mean of its divisors is an integer number (12513132638746).

Almost surely, 2^{25026265277491} is an apocalyptic number.

25026265277491 is a deficient number, since it is larger than the sum of its proper divisors (1).

25026265277491 is an equidigital number, since it uses as much as digits as its factorization.

25026265277491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 25026265277491 in words is "twenty-five trillion, twenty-six billion, two hundred sixty-five million, two hundred seventy-seven thousand, four hundred ninety-one".