1320225451 has 2 divisors, whose sum is σ = 1320225452. Its totient is φ = 1320225450.

The previous prime is 1320225437. The next prime is 1320225463. The reversal of 1320225451 is 1545220231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320225451 - 2¹³ = 1320217259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320225421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660112725 + 660112726.

It is an arithmetic number, because the mean of its divisors is an integer number (660112726).

Almost surely, 2^1320225451 is an apocalyptic number.

1320225451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320225451 is an equidigital number, since it uses as much as digits as its factorization.

1320225451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1320225451 is about 36334.9067839729. The cubic root of 1320225451 is about 1097.0237592102.

Adding to 1320225451 its reverse (1545220231), we get a palindrome (2865445682).

The spelling of 1320225451 in words is "one billion, three hundred twenty million, two hundred twenty-five thousand, four hundred fifty-one".