25849886834 has 4 divisors (see below), whose sum is σ = 38774830254. Its totient is φ = 12924943416.

The previous prime is 25849886833. The next prime is 25849886849. The reversal of 25849886834 is 43868894852.

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

It can be written as a sum of positive squares in only one way, i.e., 24446260609 + 1403626225 = 156353^2 + 37465^2 .

It is not an unprimeable number, because it can be changed into a prime (25849886833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6462471707 + ... + 6462471710.

Almost surely, 2^25849886834 is an apocalyptic number.

25849886834 is a deficient number, since it is larger than the sum of its proper divisors (12924943420).

25849886834 is a wasteful number, since it uses less digits than its factorization.

25849886834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12924943419.

The product of its digits is 106168320, while the sum is 65.

The spelling of 25849886834 in words is "twenty-five billion, eight hundred forty-nine million, eight hundred eighty-six thousand, eight hundred thirty-four".