254525428242 has 18 divisors (see below), whose sum is σ = 551476398837. Its totient is φ = 84841095936.

The previous prime is 254525428237. The next prime is 254525428247. The reversal of 254525428242 is 242824525452.

254525428242 is a `hidden beast` number, since 2 + 5 + 4 + 525 + 4 + 2 + 82 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (254525428237) and next prime (254525428247).

It can be written as a sum of positive squares in 2 ways, for example, as 179048305881 + 75477122361 = 423141^2 + 274731^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=356739.

It is not an unprimeable number, because it can be changed into a prime (254525428247) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2080978 + ... + 2199890.

Almost surely, 2^254525428242 is an apocalyptic number.

254525428242 is an abundant number, since it is smaller than the sum of its proper divisors (296950970595).

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

254525428242 is an frugal number, since it uses more digits than its factorization.

254525428242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237834 (or 118918 counting only the distinct ones).

The product of its digits is 2048000, while the sum is 45.

The spelling of 254525428242 in words is "two hundred fifty-four billion, five hundred twenty-five million, four hundred twenty-eight thousand, two hundred forty-two".