15543055134225 has 24 divisors (see below), whose sum is σ = 28553167951520. Its totient is φ = 8289629404560.

The previous prime is 15543055134223. The next prime is 15543055134281. The reversal of 15543055134225 is 52243155034551.

15543055134225 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 30 + 551 + 3 + 42 + 25 = 666.

It is not a de Polignac number, because 15543055134225 - 2¹ = 15543055134223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (15543055134223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11513373499 + ... + 11513374848.

Almost surely, 2^{15543055134225} is an apocalyptic number.

15543055134225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15543055134225 is a deficient number, since it is larger than the sum of its proper divisors (13010112817295).

15543055134225 is a wasteful number, since it uses less digits than its factorization.

15543055134225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23026748366 (or 23026748355 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 45.

The spelling of 15543055134225 in words is "fifteen trillion, five hundred forty-three billion, fifty-five million, one hundred thirty-four thousand, two hundred twenty-five".