25277750250497 has 2 divisors, whose sum is σ = 25277750250498. Its totient is φ = 25277750250496.

The previous prime is 25277750250481. The next prime is 25277750250503. The reversal of 25277750250497 is 79405205777252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16927291689841 + 8350458560656 = 4114279^2 + 2889716^2 .

It is a cyclic number.

It is not a de Polignac number, because 25277750250497 - 2⁴ = 25277750250481 is a prime.

It is a super-2 number, since 2×25277750250497² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25277752250497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12638875125248 + 12638875125249.

It is an arithmetic number, because the mean of its divisors is an integer number (12638875125249).

Almost surely, 2^{25277750250497} is an apocalyptic number.

It is an amenable number.

25277750250497 is a deficient number, since it is larger than the sum of its proper divisors (1).

25277750250497 is an equidigital number, since it uses as much as digits as its factorization.

25277750250497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86436000, while the sum is 62.

The spelling of 25277750250497 in words is "twenty-five trillion, two hundred seventy-seven billion, seven hundred fifty million, two hundred fifty thousand, four hundred ninety-seven".