26940406525 has 24 divisors (see below), whose sum is σ = 33624807944. Its totient is φ = 21411475200.

The previous prime is 26940406523. The next prime is 26940406561. The reversal of 26940406525 is 52560404962.

It can be written as a sum of positive squares in 12 ways, for example, as 8854998201 + 18085408324 = 94101^2 + 134482^2 .

It is not a de Polignac number, because 26940406525 - 2¹ = 26940406523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26940406523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5595019 + ... + 5599831.

Almost surely, 2^26940406525 is an apocalyptic number.

26940406525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26940406525 is a deficient number, since it is larger than the sum of its proper divisors (6684401419).

26940406525 is a wasteful number, since it uses less digits than its factorization.

26940406525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6241 (or 6236 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 26940406525 in words is "twenty-six billion, nine hundred forty million, four hundred six thousand, five hundred twenty-five".