26516251525 has 6 divisors (see below), whose sum is σ = 32880151922. Its totient is φ = 21213001200.

The previous prime is 26516251513. The next prime is 26516251537. The reversal of 26516251525 is 52515261562.

It is an interprime number because it is at equal distance from previous prime (26516251513) and next prime (26516251537).

It can be written as a sum of positive squares in 3 ways, for example, as 2220482884 + 24295768641 = 47122^2 + 155871^2 .

It is a de Polignac number, because none of the positive numbers 2^k-26516251525 is a prime.

It is a super-2 number, since 2×26516251525² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 530325006 + ... + 530325055.

Almost surely, 2^26516251525 is an apocalyptic number.

26516251525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26516251525 is a deficient number, since it is larger than the sum of its proper divisors (6363900397).

26516251525 is a wasteful number, since it uses less digits than its factorization.

26516251525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060650071 (or 1060650066 counting only the distinct ones).

The product of its digits is 180000, while the sum is 40.

The spelling of 26516251525 in words is "twenty-six billion, five hundred sixteen million, two hundred fifty-one thousand, five hundred twenty-five".