100281425 has 6 divisors (see below), whose sum is σ = 124348998. Its totient is φ = 80225120.

The previous prime is 100281371. The next prime is 100281431. The reversal of 100281425 is 524182001.

It can be written as a sum of positive squares in 3 ways, for example, as 141376 + 100140049 = 376^2 + 10007^2 .

It is not a de Polignac number, because 100281425 - 2⁶ = 100281361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100281425.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2005604 + ... + 2005653.

It is an arithmetic number, because the mean of its divisors is an integer number (20724833).

Almost surely, 2^100281425 is an apocalyptic number.

It is an amenable number.

100281425 is a deficient number, since it is larger than the sum of its proper divisors (24067573).

100281425 is an equidigital number, since it uses as much as digits as its factorization.

100281425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011267 (or 4011262 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 100281425 is about 10014.0613639023. The cubic root of 100281425 is about 464.5938952512.

The spelling of 100281425 in words is "one hundred million, two hundred eighty-one thousand, four hundred twenty-five".