25038762878 has 16 divisors (see below), whose sum is σ = 37643438880. Its totient is φ = 12490983936.

The previous prime is 25038762857. The next prime is 25038762887. The reversal of 25038762878 is 87826783052.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1640450 + ... + 1655642.

It is an arithmetic number, because the mean of its divisors is an integer number (2352714930).

Almost surely, 2^25038762878 is an apocalyptic number.

25038762878 is a deficient number, since it is larger than the sum of its proper divisors (12604676002).

25038762878 is a wasteful number, since it uses less digits than its factorization.

25038762878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17011.

The product of its (nonzero) digits is 9031680, while the sum is 56.

The spelling of 25038762878 in words is "twenty-five billion, thirty-eight million, seven hundred sixty-two thousand, eight hundred seventy-eight".