281141625 has 16 divisors (see below), whose sum is σ = 467820288. Its totient is φ = 149942000.

The previous prime is 281141621. The next prime is 281141647. The reversal of 281141625 is 526141182.

It is not a de Polignac number, because 281141625 - 2² = 281141621 is a prime.

It is a super-2 number, since 2×281141625² = 158081226615281250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 281141592 and 281141601.

It is not an unprimeable number, because it can be changed into a prime (281141621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374481 + ... + 375230.

It is an arithmetic number, because the mean of its divisors is an integer number (29238768).

Almost surely, 2^281141625 is an apocalyptic number.

281141625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

281141625 is a deficient number, since it is larger than the sum of its proper divisors (186678663).

281141625 is an equidigital number, since it uses as much as digits as its factorization.

281141625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749729 (or 749719 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

The square root of 281141625 is about 16767.2784016966. The cubic root of 281141625 is about 655.1011828226.

The spelling of 281141625 in words is "two hundred eighty-one million, one hundred forty-one thousand, six hundred twenty-five".