13405504232025 has 36 divisors (see below), whose sum is σ = 24012781483548. Its totient is φ = 7148996628480.

The previous prime is 13405504232017. The next prime is 13405504232123. The reversal of 13405504232025 is 52023240550431.

13405504232025 is a `hidden beast` number, since 1 + 3 + 40 + 550 + 4 + 23 + 20 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1618724388681 + 11786779843344 = 1272291^2 + 3433188^2 .

It is not a de Polignac number, because 13405504232025 - 2³ = 13405504232017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 144889 + ... + 5179961.

Almost surely, 2^{13405504232025} is an apocalyptic number.

13405504232025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13405504232025 is a deficient number, since it is larger than the sum of its proper divisors (10607277251523).

13405504232025 is a wasteful number, since it uses less digits than its factorization.

13405504232025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5046922 (or 5046914 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 13405504232025 its reverse (52023240550431), we get a palindrome (65428744782456).

The spelling of 13405504232025 in words is "thirteen trillion, four hundred five billion, five hundred four million, two hundred thirty-two thousand, twenty-five".