325115551 has 2 divisors, whose sum is σ = 325115552. Its totient is φ = 325115550.

The previous prime is 325115519. The next prime is 325115563. The reversal of 325115551 is 155511523.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 325115551 - 2⁵ = 325115519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325115951) 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, 162557775 + 162557776.

It is an arithmetic number, because the mean of its divisors is an integer number (162557776).

Almost surely, 2^325115551 is an apocalyptic number.

325115551 is a deficient number, since it is larger than the sum of its proper divisors (1).

325115551 is an equidigital number, since it uses as much as digits as its factorization.

325115551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3750, while the sum is 28.

The square root of 325115551 is about 18030.9609006287. The cubic root of 325115551 is about 687.6159062323.

The spelling of 325115551 in words is "three hundred twenty-five million, one hundred fifteen thousand, five hundred fifty-one".