125554321 has 2 divisors, whose sum is σ = 125554322. Its totient is φ = 125554320.

The previous prime is 125554279. The next prime is 125554327. The reversal of 125554321 is 123455521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77792400 + 47761921 = 8820^2 + 6911^2 .

It is a cyclic number.

It is not a de Polignac number, because 125554321 - 2⁷ = 125554193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125554321.

It is not a weakly prime, because it can be changed into another prime (125554327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62777160 + 62777161.

It is an arithmetic number, because the mean of its divisors is an integer number (62777161).

Almost surely, 2^125554321 is an apocalyptic number.

It is an amenable number.

125554321 is a deficient number, since it is larger than the sum of its proper divisors (1).

125554321 is an equidigital number, since it uses as much as digits as its factorization.

125554321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 28.

The square root of 125554321 is about 11205.1024537931. The cubic root of 125554321 is about 500.7380048285.

The spelling of 125554321 in words is "one hundred twenty-five million, five hundred fifty-four thousand, three hundred twenty-one".