725610845 has 8 divisors (see below), whose sum is σ = 873833400. Its totient is φ = 578421760.

The previous prime is 725610833. The next prime is 725610869. The reversal of 725610845 is 548016527.

It can be written as a sum of positive squares in 4 ways, for example, as 124233316 + 601377529 = 11146^2 + 24523^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 725610845 - 2⁴ = 725610829 is a prime.

It is a super-2 number, since 2×725610845² = 1053022196763228050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 725610799 and 725610808.

It is a congruent 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, 256820 + ... + 259629.

It is an arithmetic number, because the mean of its divisors is an integer number (109229175).

Almost surely, 2^725610845 is an apocalyptic number.

It is an amenable number.

725610845 is a deficient number, since it is larger than the sum of its proper divisors (148222555).

725610845 is a wasteful number, since it uses less digits than its factorization.

725610845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516735.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 725610845 is about 26937.1647542944. The cubic root of 725610845 is about 898.6031190450.

The spelling of 725610845 in words is "seven hundred twenty-five million, six hundred ten thousand, eight hundred forty-five".