25254543123 has 24 divisors (see below), whose sum is σ = 37933063168. Its totient is φ = 16790427144.

The previous prime is 25254543113. The next prime is 25254543131. The reversal of 25254543123 is 32134545252.

25254543123 is a `hidden beast` number, since 2 + 52 + 54 + 543 + 12 + 3 = 666.

It is not a de Polignac number, because 25254543123 - 2⁵ = 25254543091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25254543113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52411 + ... + 230772.

Almost surely, 2^25254543123 is an apocalyptic number.

25254543123 is a deficient number, since it is larger than the sum of its proper divisors (12678520045).

25254543123 is an equidigital number, since it uses as much as digits as its factorization.

25254543123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283565 (or 283553 counting only the distinct ones).

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

The spelling of 25254543123 in words is "twenty-five billion, two hundred fifty-four million, five hundred forty-three thousand, one hundred twenty-three".