404211425 has 12 divisors (see below), whose sum is σ = 518506620. Its totient is φ = 312217920.

The previous prime is 404211403. The next prime is 404211427. The reversal of 404211425 is 524112404.

It can be written as a sum of positive squares in 6 ways, for example, as 5650129 + 398561296 = 2377^2 + 19964^2 .

It is not a de Polignac number, because 404211425 - 2¹⁴ = 404195041 is a prime.

It is a super-2 number, since 2×404211425² = 326773752201061250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 404211425.

It is not an unprimeable number, because it can be changed into a prime (404211427) 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, 278042 + ... + 279491.

It is an arithmetic number, because the mean of its divisors is an integer number (43208885).

Almost surely, 2^404211425 is an apocalyptic number.

It is an amenable number.

404211425 is a deficient number, since it is larger than the sum of its proper divisors (114295195).

404211425 is a wasteful number, since it uses less digits than its factorization.

404211425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557572 (or 557567 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 404211425 is about 20105.0099477717. The cubic root of 404211425 is about 739.3831144501.

Adding to 404211425 its reverse (524112404), we get a palindrome (928323829).

The spelling of 404211425 in words is "four hundred four million, two hundred eleven thousand, four hundred twenty-five".