25530090969553 has 2 divisors, whose sum is σ = 25530090969554. Its totient is φ = 25530090969552.

The previous prime is 25530090969511. The next prime is 25530090969671. The reversal of 25530090969553 is 35596909003552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16521070710544 + 9009020259009 = 4064612^2 + 3001503^2 .

It is a cyclic number.

It is not a de Polignac number, because 25530090969553 - 2⁹ = 25530090969041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25530090969491 and 25530090969500.

It is not a weakly prime, because it can be changed into another prime (25530090069553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12765045484776 + 12765045484777.

It is an arithmetic number, because the mean of its divisors is an integer number (12765045484777).

Almost surely, 2^{25530090969553} is an apocalyptic number.

It is an amenable number.

25530090969553 is a deficient number, since it is larger than the sum of its proper divisors (1).

25530090969553 is an equidigital number, since it uses as much as digits as its factorization.

25530090969553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49207500, while the sum is 61.

The spelling of 25530090969553 in words is "twenty-five trillion, five hundred thirty billion, ninety million, nine hundred sixty-nine thousand, five hundred fifty-three".