2500406878 has 8 divisors (see below), whose sum is σ = 3948010920. Its totient is φ = 1184403240.

The previous prime is 2500406873. The next prime is 2500406893. The reversal of 2500406878 is 8786040052.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2500406878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500406873) 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, 32900053 + ... + 32900128.

It is an arithmetic number, because the mean of its divisors is an integer number (493501365).

Almost surely, 2^2500406878 is an apocalyptic number.

2500406878 is a deficient number, since it is larger than the sum of its proper divisors (1447604042).

2500406878 is a wasteful number, since it uses less digits than its factorization.

2500406878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65800202.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 2500406878 is about 50004.0686144638. The cubic root of 2500406878 is about 1357.2824334241.

The spelling of 2500406878 in words is "two billion, five hundred million, four hundred six thousand, eight hundred seventy-eight".