2500078305 has 8 divisors (see below), whose sum is σ = 4000125312. Its totient is φ = 1333375088.

The previous prime is 2500078303. The next prime is 2500078333. The reversal of 2500078305 is 5038700052.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2500078305 - 2¹ = 2500078303 is a prime.

It is a super-2 number, since 2×2500078305² = 12500783062263346050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2500078303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83335929 + ... + 83335958.

It is an arithmetic number, because the mean of its divisors is an integer number (500015664).

Almost surely, 2^2500078305 is an apocalyptic number.

It is an amenable number.

2500078305 is a deficient number, since it is larger than the sum of its proper divisors (1500047007).

2500078305 is a wasteful number, since it uses less digits than its factorization.

2500078305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166671895.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 2500078305 is about 50000.7830438684. The cubic root of 2500078305 is about 1357.2229783143. Note that the first 3 decimals are identical.

Adding to 2500078305 its reverse (5038700052), we get a palindrome (7538778357).

The spelling of 2500078305 in words is "two billion, five hundred million, seventy-eight thousand, three hundred five".