25725250090061 has 2 divisors, whose sum is σ = 25725250090062. Its totient is φ = 25725250090060.

The previous prime is 25725250090039. The next prime is 25725250090079. The reversal of 25725250090061 is 16009005252752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21252422701225 + 4472827388836 = 4610035^2 + 2114906^2 .

It is a cyclic number.

It is not a de Polignac number, because 25725250090061 - 2¹⁰ = 25725250089037 is a prime.

It is a super-2 number, since 2×25725250090061² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25725250089994 and 25725250090021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25725250090021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12862625045030 + 12862625045031.

It is an arithmetic number, because the mean of its divisors is an integer number (12862625045031).

Almost surely, 2^{25725250090061} is an apocalyptic number.

It is an amenable number.

25725250090061 is a deficient number, since it is larger than the sum of its proper divisors (1).

25725250090061 is an equidigital number, since it uses as much as digits as its factorization.

25725250090061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 25725250090061 in words is "twenty-five trillion, seven hundred twenty-five billion, two hundred fifty million, ninety thousand, sixty-one".