355640825 has 6 divisors (see below), whose sum is σ = 440994654. Its totient is φ = 284512640.

The previous prime is 355640809. The next prime is 355640827. The reversal of 355640825 is 528046553.

It can be written as a sum of positive squares in 3 ways, for example, as 111281401 + 244359424 = 10549^2 + 15632^2 .

It is not a de Polignac number, because 355640825 - 2⁴ = 355640809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (355640827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7112792 + ... + 7112841.

It is an arithmetic number, because the mean of its divisors is an integer number (73499109).

Almost surely, 2^355640825 is an apocalyptic number.

It is an amenable number.

355640825 is a deficient number, since it is larger than the sum of its proper divisors (85353829).

355640825 is a wasteful number, since it uses less digits than its factorization.

355640825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14225643 (or 14225638 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 355640825 is about 18858.4417436860. The cubic root of 355640825 is about 708.4956742863.

The spelling of 355640825 in words is "three hundred fifty-five million, six hundred forty thousand, eight hundred twenty-five".