26512625380 has 72 divisors (see below), whose sum is σ = 57746961720. Its totient is φ = 10224345600.

The previous prime is 26512625357. The next prime is 26512625407. The reversal of 26512625380 is 8352621562.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12621174336 + 13891451044 = 112344^2 + 117862^2 .

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, 5398366 + ... + 5403274.

It is an arithmetic number, because the mean of its divisors is an integer number (802041135).

Almost surely, 2^26512625380 is an apocalyptic number.

26512625380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26512625380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28873480860).

26512625380 is an abundant number, since it is smaller than the sum of its proper divisors (31234336340).

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

26512625380 is a wasteful number, since it uses less digits than its factorization.

26512625380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261 (or 5228 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 26512625380 in words is "twenty-six billion, five hundred twelve million, six hundred twenty-five thousand, three hundred eighty".