25986329493 has 8 divisors (see below), whose sum is σ = 34649528256. Its totient is φ = 17323675200.

The previous prime is 25986329429. The next prime is 25986329497. The reversal of 25986329493 is 39492368952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25986329493 - 2⁶ = 25986329429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25986329497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7348 + ... + 228093.

It is an arithmetic number, because the mean of its divisors is an integer number (4331191032).

Almost surely, 2^25986329493 is an apocalyptic number.

It is an amenable number.

25986329493 is a deficient number, since it is larger than the sum of its proper divisors (8663198763).

25986329493 is a wasteful number, since it uses less digits than its factorization.

25986329493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272235.

The product of its digits is 25194240, while the sum is 60.

The spelling of 25986329493 in words is "twenty-five billion, nine hundred eighty-six million, three hundred twenty-nine thousand, four hundred ninety-three".