405225013 has 4 divisors (see below), whose sum is σ = 411868108. Its totient is φ = 398581920.

The previous prime is 405225011. The next prime is 405225043. The reversal of 405225013 is 310522504.

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 95218564 + 310006449 = 9758^2 + 17607^2 .

It is a cyclic number.

It is not a de Polignac number, because 405225013 - 2¹ = 405225011 is a prime.

It is a super-2 number, since 2×405225013² = 328414622321700338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405225011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3321456 + ... + 3321577.

It is an arithmetic number, because the mean of its divisors is an integer number (102967027).

Almost surely, 2^405225013 is an apocalyptic number.

It is an amenable number.

405225013 is a deficient number, since it is larger than the sum of its proper divisors (6643095).

405225013 is an equidigital number, since it uses as much as digits as its factorization.

405225013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6643094.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 405225013 is about 20130.2015141429. The cubic root of 405225013 is about 740.0006166296. Note that the first 3 decimals are identical.

Adding to 405225013 its reverse (310522504), we get a palindrome (715747517).

It can be divided in two parts, 40522501 and 3, that added together give a palindrome (40522504).

The spelling of 405225013 in words is "four hundred five million, two hundred twenty-five thousand, thirteen".