25870958678 has 4 divisors (see below), whose sum is σ = 38806438020. Its totient is φ = 12935479338.

The previous prime is 25870958677. The next prime is 25870958699. The reversal of 25870958678 is 87685907852.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25870958677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6467739668 + ... + 6467739671.

It is an arithmetic number, because the mean of its divisors is an integer number (9701609505).

Almost surely, 2^25870958678 is an apocalyptic number.

25870958678 is a deficient number, since it is larger than the sum of its proper divisors (12935479342).

25870958678 is a wasteful number, since it uses less digits than its factorization.

25870958678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12935479341.

The product of its (nonzero) digits is 67737600, while the sum is 65.

The spelling of 25870958678 in words is "twenty-five billion, eight hundred seventy million, nine hundred fifty-eight thousand, six hundred seventy-eight".