325220016457 has 6 divisors (see below), whose sum is σ = 378317162058. Its totient is φ = 278760014064.

The previous prime is 325220016431. The next prime is 325220016481. The reversal of 325220016457 is 754610022523.

It can be written as a sum of positive squares in only one way, i.e., 196784508816 + 128435507641 = 443604^2 + 358379^2 .

It is not a de Polignac number, because 325220016457 - 2²³ = 325211627849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (325220016257) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3318571548 + ... + 3318571645.

It is an arithmetic number, because the mean of its divisors is an integer number (63052860343).

Almost surely, 2^325220016457 is an apocalyptic number.

It is an amenable number.

325220016457 is a deficient number, since it is larger than the sum of its proper divisors (53097145601).

325220016457 is an equidigital number, since it uses as much as digits as its factorization.

325220016457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6637143207 (or 6637143200 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 325220016457 in words is "three hundred twenty-five billion, two hundred twenty million, sixteen thousand, four hundred fifty-seven".