13225040 has 20 divisors (see below), whose sum is σ = 30748404. Its totient is φ = 5289984.

The previous prime is 13225039. The next prime is 13225061. The reversal of 13225040 is 4052231.

It can be written as a sum of positive squares in 2 ways, for example, as 1336336 + 11888704 = 1156^2 + 3448^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82577 + ... + 82736.

Almost surely, 2^13225040 is an apocalyptic number.

13225040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13225040 is an abundant number, since it is smaller than the sum of its proper divisors (17523364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13225040 is a wasteful number, since it uses less digits than its factorization.

13225040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165326 (or 165320 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 13225040 is about 3636.6248088028. The cubic root of 13225040 is about 236.4824946406.

Adding to 13225040 its reverse (4052231), we get a palindrome (17277271).

It can be divided in two parts, 132250 and 40, that multiplied together give a square (5290000 = 2300²).

The spelling of 13225040 in words is "thirteen million, two hundred twenty-five thousand, forty".