659925445 has 4 divisors (see below), whose sum is σ = 791910540. Its totient is φ = 527940352.

The previous prime is 659925439. The next prime is 659925467. The reversal of 659925445 is 544529956.

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 93818596 + 566106849 = 9686^2 + 23793^2 .

It is a cyclic number.

It is not a de Polignac number, because 659925445 - 2¹⁵ = 659892677 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 65992540 + ... + 65992549.

It is an arithmetic number, because the mean of its divisors is an integer number (197977635).

Almost surely, 2^659925445 is an apocalyptic number.

It is an amenable number.

659925445 is a deficient number, since it is larger than the sum of its proper divisors (131985095).

659925445 is a wasteful number, since it uses less digits than its factorization.

659925445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131985094.

The product of its digits is 1944000, while the sum is 49.

The square root of 659925445 is about 25689.0140916307. The cubic root of 659925445 is about 870.6259840624.

The spelling of 659925445 in words is "six hundred fifty-nine million, nine hundred twenty-five thousand, four hundred forty-five".