280125616 has 20 divisors (see below), whose sum is σ = 561459600. Its totient is φ = 135232832.

The previous prime is 280125583. The next prime is 280125619. The reversal of 280125616 is 616521082.

It is not an unprimeable number, because it can be changed into a prime (280125619) 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, 301396 + ... + 302323.

It is an arithmetic number, because the mean of its divisors is an integer number (28072980).

Almost surely, 2^280125616 is an apocalyptic number.

It is an amenable number.

280125616 is an abundant number, since it is smaller than the sum of its proper divisors (281333984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

280125616 is a wasteful number, since it uses less digits than its factorization.

280125616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603756 (or 603750 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 280125616 is about 16736.9536057193. The cubic root of 280125616 is about 654.3110803315.

Adding to 280125616 its reverse (616521082), we get a palindrome (896646698).

The spelling of 280125616 in words is "two hundred eighty million, one hundred twenty-five thousand, six hundred sixteen".