25745342499 has 24 divisors (see below), whose sum is σ = 38575018560. Its totient is φ = 16526498688.

The previous prime is 25745342477. The next prime is 25745342549. The reversal of 25745342499 is 99424354752.

It is a happy number.

25745342499 is a `hidden beast` number, since 257 + 4 + 5 + 342 + 49 + 9 = 666.

It is not a de Polignac number, because 25745342499 - 2¹¹ = 25745340451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25745342429) 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 23 ways as a sum of consecutive naturals, for example, 38602 + ... + 230175.

It is an arithmetic number, because the mean of its divisors is an integer number (1607292440).

Almost surely, 2^25745342499 is an apocalyptic number.

25745342499 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

25745342499 is a deficient number, since it is larger than the sum of its proper divisors (12829676061).

25745342499 is a wasteful number, since it uses less digits than its factorization.

25745342499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269179 (or 269176 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 54.

The spelling of 25745342499 in words is "twenty-five billion, seven hundred forty-five million, three hundred forty-two thousand, four hundred ninety-nine".