725086345 has 4 divisors (see below), whose sum is σ = 870103620. Its totient is φ = 580069072.

The previous prime is 725086291. The next prime is 725086361. The reversal of 725086345 is 543680527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 232379536 + 492706809 = 15244^2 + 22197^2 .

It is a cyclic number.

It is not a de Polignac number, because 725086345 - 2¹⁹ = 724562057 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 725086298 and 725086307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72508630 + ... + 72508639.

It is an arithmetic number, because the mean of its divisors is an integer number (217525905).

Almost surely, 2^725086345 is an apocalyptic number.

It is an amenable number.

725086345 is a deficient number, since it is larger than the sum of its proper divisors (145017275).

725086345 is a wasteful number, since it uses less digits than its factorization.

725086345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145017274.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 725086345 is about 26927.4273743334. The cubic root of 725086345 is about 898.3865516535.

The spelling of 725086345 in words is "seven hundred twenty-five million, eighty-six thousand, three hundred forty-five".