404544012025 has 12 divisors (see below), whose sum is σ = 506806068412. Its totient is φ = 320298762240.

The previous prime is 404544011969. The next prime is 404544012029. The reversal of 404544012025 is 520210445404.

It can be written as a sum of positive squares in 6 ways, for example, as 1603441849 + 402940570176 = 40043^2 + 634776^2 .

It is not a de Polignac number, because 404544012025 - 2¹⁷ = 404543880953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404544012029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83408712 + ... + 83413561.

Almost surely, 2^404544012025 is an apocalyptic number.

It is an amenable number.

404544012025 is a deficient number, since it is larger than the sum of its proper divisors (102262056387).

404544012025 is a wasteful number, since it uses less digits than its factorization.

404544012025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166822380 (or 166822375 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 404544012025 its reverse (520210445404), we get a palindrome (924754457429).

The spelling of 404544012025 in words is "four hundred four billion, five hundred forty-four million, twelve thousand, twenty-five".