325663561994 has 16 divisors (see below), whose sum is σ = 496050998400. Its totient is φ = 160328540064.

The previous prime is 325663561991. The next prime is 325663562033. The reversal of 325663561994 is 499165366523.

325663561994 = T₄₉₂₅₇ + T₄₉₂₅₈ + ... + T₄₉₅₂₃.

It is a super-2 number, since 2×325663561994² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (325663561991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3785012 + ... + 3870095.

It is an arithmetic number, because the mean of its divisors is an integer number (31003187400).

Almost surely, 2^325663561994 is an apocalyptic number.

325663561994 is a deficient number, since it is larger than the sum of its proper divisors (170387436406).

325663561994 is a wasteful number, since it uses less digits than its factorization.

325663561994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7655437.

The product of its digits is 31492800, while the sum is 59.

The spelling of 325663561994 in words is "three hundred twenty-five billion, six hundred sixty-three million, five hundred sixty-one thousand, nine hundred ninety-four".