12405572 has 6 divisors (see below), whose sum is σ = 21709758. Its totient is φ = 6202784.

The previous prime is 12405571. The next prime is 12405577. The reversal of 12405572 is 27550421.

12405572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11182336 + 1223236 = 3344^2 + 1106^2 .

It is not an unprimeable number, because it can be changed into a prime (12405571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550693 + ... + 1550700.

It is an arithmetic number, because the mean of its divisors is an integer number (3618293).

Almost surely, 2^12405572 is an apocalyptic number.

It is an amenable number.

12405572 is a deficient number, since it is larger than the sum of its proper divisors (9304186).

12405572 is a wasteful number, since it uses less digits than its factorization.

12405572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101397 (or 3101395 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 12405572 is about 3522.1544543078. The cubic root of 12405572 is about 231.4935693207.

Adding to 12405572 its reverse (27550421), we get a palindrome (39955993).

The spelling of 12405572 in words is "twelve million, four hundred five thousand, five hundred seventy-two".