351220325 has 6 divisors (see below), whose sum is σ = 435513234. Its totient is φ = 280976240.

The previous prime is 351220319. The next prime is 351220343. The reversal of 351220325 is 523022153.

It can be written as a sum of positive squares in 3 ways, for example, as 4739329 + 346480996 = 2177^2 + 18614^2 .

It is not a de Polignac number, because 351220325 - 2²⁰ = 350171749 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 351220325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7024382 + ... + 7024431.

It is an arithmetic number, because the mean of its divisors is an integer number (72585539).

Almost surely, 2^351220325 is an apocalyptic number.

It is an amenable number.

351220325 is a deficient number, since it is larger than the sum of its proper divisors (84292909).

351220325 is a wasteful number, since it uses less digits than its factorization.

351220325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14048823 (or 14048818 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 351220325 is about 18740.8731119977. The cubic root of 351220325 is about 705.5479702640.

Adding to 351220325 its reverse (523022153), we get a palindrome (874242478).

The spelling of 351220325 in words is "three hundred fifty-one million, two hundred twenty thousand, three hundred twenty-five".