25837878043 has 4 divisors (see below), whose sum is σ = 27357753240. Its totient is φ = 24318002848.

The previous prime is 25837878029. The next prime is 25837878067. The reversal of 25837878043 is 34087873852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25837878043 - 2¹³ = 25837869851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25837878643) 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, 759937573 + ... + 759937606.

It is an arithmetic number, because the mean of its divisors is an integer number (6839438310).

Almost surely, 2^25837878043 is an apocalyptic number.

25837878043 is a deficient number, since it is larger than the sum of its proper divisors (1519875197).

25837878043 is a wasteful number, since it uses less digits than its factorization.

25837878043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519875196.

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 25837878043 in words is "twenty-five billion, eight hundred thirty-seven million, eight hundred seventy-eight thousand, forty-three".