345391625 has 8 divisors (see below), whose sum is σ = 431048904. Its totient is φ = 276313200.

The previous prime is 345391531. The next prime is 345391639. The reversal of 345391625 is 526193543.

It can be written as a sum of positive squares in 4 ways, for example, as 26569 + 345365056 = 163^2 + 18584^2 .

It is not a de Polignac number, because 345391625 - 2¹⁶ = 345326089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1381442 + ... + 1381691.

It is an arithmetic number, because the mean of its divisors is an integer number (53881113).

Almost surely, 2^345391625 is an apocalyptic number.

It is an amenable number.

345391625 is a deficient number, since it is larger than the sum of its proper divisors (85657279).

345391625 is an equidigital number, since it uses as much as digits as its factorization.

345391625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763148 (or 2763138 counting only the distinct ones).

The product of its digits is 97200, while the sum is 38.

The square root of 345391625 is about 18584.7148215947. The cubic root of 345391625 is about 701.6231889553.

The spelling of 345391625 in words is "three hundred forty-five million, three hundred ninety-one thousand, six hundred twenty-five".