25394864758 has 16 divisors (see below), whose sum is σ = 40818965040. Its totient is φ = 11806541056.

The previous prime is 25394864753. The next prime is 25394864801. The reversal of 25394864758 is 85746849352.

It is a super-2 number, since 2×25394864758² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25394864696 and 25394864705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25394864753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4496623 + ... + 4502266.

It is an arithmetic number, because the mean of its divisors is an integer number (2551185315).

Almost surely, 2^25394864758 is an apocalyptic number.

25394864758 is a deficient number, since it is larger than the sum of its proper divisors (15424100282).

25394864758 is a wasteful number, since it uses less digits than its factorization.

25394864758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8998991.

The product of its digits is 58060800, while the sum is 61.

The spelling of 25394864758 in words is "twenty-five billion, three hundred ninety-four million, eight hundred sixty-four thousand, seven hundred fifty-eight".