13245405 has 16 divisors (see below), whose sum is σ = 21492864. Its totient is φ = 6964160.

The previous prime is 13245403. The next prime is 13245409. The reversal of 13245405 is 50454231.

It is not a de Polignac number, because 13245405 - 2¹ = 13245403 is a prime.

It is a super-2 number, since 2×13245405² = 350881507228050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13245403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5154 + ... + 7283.

It is an arithmetic number, because the mean of its divisors is an integer number (1343304).

Almost surely, 2^13245405 is an apocalyptic number.

13245405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13245405 is a deficient number, since it is larger than the sum of its proper divisors (8247459).

13245405 is a wasteful number, since it uses less digits than its factorization.

13245405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12516.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 13245405 is about 3639.4237181180. The cubic root of 13245405 is about 236.6038174270.

Adding to 13245405 its reverse (50454231), we get a palindrome (63699636).

The spelling of 13245405 in words is "thirteen million, two hundred forty-five thousand, four hundred five".