26078787725 has 24 divisors (see below), whose sum is σ = 34057716000. Its totient is φ = 19754504640.

The previous prime is 26078787703. The next prime is 26078787739. The reversal of 26078787725 is 52778787062.

It is a de Polignac number, because none of the positive numbers 2^k-26078787725 is a prime.

It is a super-2 number, since 2×26078787725² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 950246 + ... + 977304.

It is an arithmetic number, because the mean of its divisors is an integer number (1419071500).

Almost surely, 2^26078787725 is an apocalyptic number.

26078787725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26078787725 is a deficient number, since it is larger than the sum of its proper divisors (7978928275).

26078787725 is a wasteful number, since it uses less digits than its factorization.

26078787725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29117 (or 29112 counting only the distinct ones).

The product of its (nonzero) digits is 18439680, while the sum is 59.

The spelling of 26078787725 in words is "twenty-six billion, seventy-eight million, seven hundred eighty-seven thousand, seven hundred twenty-five".