345821725 has 6 divisors (see below), whose sum is σ = 428818970. Its totient is φ = 276657360.

The previous prime is 345821719. The next prime is 345821761. The reversal of 345821725 is 527128543.

It can be written as a sum of positive squares in 3 ways, for example, as 36132121 + 309689604 = 6011^2 + 17598^2 .

It is a de Polignac number, because none of the positive numbers 2^k-345821725 is a prime.

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, 6916410 + ... + 6916459.

Almost surely, 2^345821725 is an apocalyptic number.

It is an amenable number.

345821725 is a deficient number, since it is larger than the sum of its proper divisors (82997245).

345821725 is a wasteful number, since it uses less digits than its factorization.

345821725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13832879 (or 13832874 counting only the distinct ones).

The product of its digits is 67200, while the sum is 37.

The square root of 345821725 is about 18596.2825586191. The cubic root of 345821725 is about 701.9143009753.

The spelling of 345821725 in words is "three hundred forty-five million, eight hundred twenty-one thousand, seven hundred twenty-five".