13541520225 has 24 divisors (see below), whose sum is σ = 22909318432. Its totient is φ = 7054185600.

The previous prime is 13541520211. The next prime is 13541520247. The reversal of 13541520225 is 52202514531.

It is not a de Polignac number, because 13541520225 - 2²³ = 13533131617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13541520192 and 13541520201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2096236 + ... + 2102685.

Almost surely, 2^13541520225 is an apocalyptic number.

13541520225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13541520225 is a deficient number, since it is larger than the sum of its proper divisors (9367798207).

13541520225 is a wasteful number, since it uses less digits than its factorization.

13541520225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4198977 (or 4198972 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 13541520225 in words is "thirteen billion, five hundred forty-one million, five hundred twenty thousand, two hundred twenty-five".