280425725 has 12 divisors (see below), whose sum is σ = 347939040. Its totient is φ = 224204400.

The previous prime is 280425713. The next prime is 280425763. The reversal of 280425725 is 527524082.

It is not a de Polignac number, because 280425725 - 2⁸ = 280425469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67766 + ... + 71784.

It is an arithmetic number, because the mean of its divisors is an integer number (28994920).

Almost surely, 2^280425725 is an apocalyptic number.

280425725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

280425725 is a deficient number, since it is larger than the sum of its proper divisors (67513315).

280425725 is a wasteful number, since it uses less digits than its factorization.

280425725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6820 (or 6815 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 280425725 is about 16745.9166664593. The cubic root of 280425725 is about 654.5446595430.

The spelling of 280425725 in words is "two hundred eighty million, four hundred twenty-five thousand, seven hundred twenty-five".