280425017 has 4 divisors (see below), whose sum is σ = 282633216. Its totient is φ = 278216820.

The previous prime is 280425007. The next prime is 280425023. The reversal of 280425017 is 710524082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 280425017 - 2⁸ = 280424761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280425007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103909 + ... + 1104162.

It is an arithmetic number, because the mean of its divisors is an integer number (70658304).

Almost surely, 2^280425017 is an apocalyptic number.

It is an amenable number.

280425017 is a deficient number, since it is larger than the sum of its proper divisors (2208199).

280425017 is a wasteful number, since it uses less digits than its factorization.

280425017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208198.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 280425017 is about 16745.8955269642. The cubic root of 280425017 is about 654.5441086924.

Adding to 280425017 its reverse (710524082), we get a palindrome (990949099).

The spelling of 280425017 in words is "two hundred eighty million, four hundred twenty-five thousand, seventeen".