325020402251 has 16 divisors (see below), whose sum is σ = 340622247168. Its totient is φ = 309541980000.

The previous prime is 325020402209. The next prime is 325020402331. The reversal of 325020402251 is 152204020523.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325020402251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 325020402251.

It is not an unprimeable number, because it can be changed into a prime (325020462251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19972220 + ... + 19988486.

It is an arithmetic number, because the mean of its divisors is an integer number (21288890448).

Almost surely, 2^325020402251 is an apocalyptic number.

325020402251 is a deficient number, since it is larger than the sum of its proper divisors (15601844917).

325020402251 is a wasteful number, since it uses less digits than its factorization.

325020402251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20002.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 325020402251 its reverse (152204020523), we get a palindrome (477224422774).

The spelling of 325020402251 in words is "three hundred twenty-five billion, twenty million, four hundred two thousand, two hundred fifty-one".