1225026627541 has 2 divisors, whose sum is σ = 1225026627542. Its totient is φ = 1225026627540.

The previous prime is 1225026627523. The next prime is 1225026627619. The reversal of 1225026627541 is 1457266205221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1224984104100 + 42523441 = 1106790^2 + 6521^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225026627541 - 2¹⁹ = 1225026103253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225026627641) 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, 612513313770 + 612513313771.

It is an arithmetic number, because the mean of its divisors is an integer number (612513313771).

Almost surely, 2^{1225026627541} is an apocalyptic number.

It is an amenable number.

1225026627541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225026627541 is an equidigital number, since it uses as much as digits as its factorization.

1225026627541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 1225026627541 in words is "one trillion, two hundred twenty-five billion, twenty-six million, six hundred twenty-seven thousand, five hundred forty-one".