25709398075 has 6 divisors (see below), whose sum is σ = 31879653644. Its totient is φ = 20567518440.

The previous prime is 25709398067. The next prime is 25709398081. The reversal of 25709398075 is 57089390752.

It is not a de Polignac number, because 25709398075 - 2³ = 25709398067 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 514187937 + ... + 514187986.

Almost surely, 2^25709398075 is an apocalyptic number.

25709398075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25709398075 is a deficient number, since it is larger than the sum of its proper divisors (6170255569).

25709398075 is a wasteful number, since it uses less digits than its factorization.

25709398075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028375933 (or 1028375928 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 55.

The spelling of 25709398075 in words is "twenty-five billion, seven hundred nine million, three hundred ninety-eight thousand, seventy-five".