2505280278 has 8 divisors (see below), whose sum is σ = 5010560568. Its totient is φ = 835093424.

The previous prime is 2505280273. The next prime is 2505280289. The reversal of 2505280278 is 8720825052.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2505280278 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505280273) 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, 208773351 + ... + 208773362.

It is an arithmetic number, because the mean of its divisors is an integer number (626320071).

Almost surely, 2^2505280278 is an apocalyptic number.

2505280278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2505280278 is a wasteful number, since it uses less digits than its factorization.

2505280278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417546718.

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 2505280278 is about 50052.7749280697. The cubic root of 2505280278 is about 1358.1636616687.

The spelling of 2505280278 in words is "two billion, five hundred five million, two hundred eighty thousand, two hundred seventy-eight".