26250402740 has 24 divisors (see below), whose sum is σ = 55149572520. Its totient is φ = 10495641728.

The previous prime is 26250402727. The next prime is 26250402799. The reversal of 26250402740 is 4720405262.

It can be written as a sum of positive squares in 4 ways, for example, as 1121178256 + 25129224484 = 33484^2 + 158522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26250402697 and 26250402706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234635 + ... + 327954.

It is an arithmetic number, because the mean of its divisors is an integer number (2297898855).

Almost surely, 2^26250402740 is an apocalyptic number.

26250402740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26250402740 is an abundant number, since it is smaller than the sum of its proper divisors (28899169780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26250402740 is a wasteful number, since it uses less digits than its factorization.

26250402740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564931 (or 564929 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The spelling of 26250402740 in words is "twenty-six billion, two hundred fifty million, four hundred two thousand, seven hundred forty".