125450321 has 2 divisors, whose sum is σ = 125450322. Its totient is φ = 125450320.

The previous prime is 125450309. The next prime is 125450329. The reversal of 125450321 is 123054521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120450625 + 4999696 = 10975^2 + 2236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125450321 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (125450329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62725160 + 62725161.

It is an arithmetic number, because the mean of its divisors is an integer number (62725161).

Almost surely, 2^125450321 is an apocalyptic number.

It is an amenable number.

125450321 is a deficient number, since it is larger than the sum of its proper divisors (1).

125450321 is an equidigital number, since it uses as much as digits as its factorization.

125450321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 125450321 is about 11200.4607494513. The cubic root of 125450321 is about 500.5997084121.

The spelling of 125450321 in words is "one hundred twenty-five million, four hundred fifty thousand, three hundred twenty-one".