20325961 has 2 divisors, whose sum is σ = 20325962. Its totient is φ = 20325960.

The previous prime is 20325941. The next prime is 20325967. The reversal of 20325961 is 16952302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13461561 + 6864400 = 3669^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 20325961 - 2¹¹ = 20323913 is a prime.

It is not a weakly prime, because it can be changed into another prime (20325967) 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, 10162980 + 10162981.

It is an arithmetic number, because the mean of its divisors is an integer number (10162981).

Almost surely, 2^20325961 is an apocalyptic number.

It is an amenable number.

20325961 is a deficient number, since it is larger than the sum of its proper divisors (1).

20325961 is an equidigital number, since it uses as much as digits as its factorization.

20325961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 20325961 is about 4508.4322108689. The cubic root of 20325961 is about 272.9084792084.

The spelling of 20325961 in words is "twenty million, three hundred twenty-five thousand, nine hundred sixty-one".