281225026 has 4 divisors (see below), whose sum is σ = 421837542. Its totient is φ = 140612512.

The previous prime is 281225003. The next prime is 281225039. The reversal of 281225026 is 620522182.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 260984025 + 20241001 = 16155^2 + 4499^2 .

It is a junction number, because it is equal to n+sod(n) for n = 281224985 and 281225003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70306255 + ... + 70306258.

Almost surely, 2^281225026 is an apocalyptic number.

281225026 is a deficient number, since it is larger than the sum of its proper divisors (140612516).

281225026 is a wasteful number, since it uses less digits than its factorization.

281225026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140612515.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 281225026 is about 16769.7652338964. The cubic root of 281225026 is about 655.1659552684.

The spelling of 281225026 in words is "two hundred eighty-one million, two hundred twenty-five thousand, twenty-six".