26245015500 has 192 divisors, whose sum is σ = 83802700800. Its totient is φ = 6329664000.

The previous prime is 26245015481. The next prime is 26245015501. The reversal of 26245015500 is 551054262.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (26245015501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3279504 + ... + 3287496.

It is an arithmetic number, because the mean of its divisors is an integer number (436472400).

Almost surely, 2^26245015500 is an apocalyptic number.

26245015500 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 26245015500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41901350400).

26245015500 is an abundant number, since it is smaller than the sum of its proper divisors (57557685300).

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

26245015500 is a wasteful number, since it uses less digits than its factorization.

26245015500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8225 (or 8213 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 26245015500 its reverse (551054262), we get a palindrome (26796069762).

The spelling of 26245015500 in words is "twenty-six billion, two hundred forty-five million, fifteen thousand, five hundred".