26493231825 has 72 divisors (see below), whose sum is σ = 47893809600. Its totient is φ = 13998787200.

The previous prime is 26493231781. The next prime is 26493231833. The reversal of 26493231825 is 52813239462.

It is a de Polignac number, because none of the positive numbers 2^k-26493231825 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 17532820 + ... + 17534330.

It is an arithmetic number, because the mean of its divisors is an integer number (665191800).

Almost surely, 2^26493231825 is an apocalyptic number.

26493231825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26493231825 is a deficient number, since it is larger than the sum of its proper divisors (21400577775).

26493231825 is a wasteful number, since it uses less digits than its factorization.

26493231825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199 (or 2191 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 26493231825 in words is "twenty-six billion, four hundred ninety-three million, two hundred thirty-one thousand, eight hundred twenty-five".