20325451 has 2 divisors, whose sum is σ = 20325452. Its totient is φ = 20325450.

The previous prime is 20325443. The next prime is 20325493. The reversal of 20325451 is 15452302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20325451 - 2³ = 20325443 is a prime.

It is not a weakly prime, because it can be changed into another prime (20325401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10162725 + 10162726.

It is an arithmetic number, because the mean of its divisors is an integer number (10162726).

Almost surely, 2^20325451 is an apocalyptic number.

20325451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20325451 is an equidigital number, since it uses as much as digits as its factorization.

20325451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20325451 is about 4508.3756498322. The cubic root of 20325451 is about 272.9061966679.

Adding to 20325451 its reverse (15452302), we get a palindrome (35777753).

The spelling of 20325451 in words is "twenty million, three hundred twenty-five thousand, four hundred fifty-one".