25493950389 has 8 divisors (see below), whose sum is σ = 33992863840. Its totient is φ = 16995501936.

The previous prime is 25493950357. The next prime is 25493950399. The reversal of 25493950389 is 98305939452.

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

It is not a de Polignac number, because 25493950389 - 2⁵ = 25493950357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25493950309) 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, 42747 + ... + 229815.

It is an arithmetic number, because the mean of its divisors is an integer number (4249107980).

Almost surely, 2^25493950389 is an apocalyptic number.

It is an amenable number.

25493950389 is a deficient number, since it is larger than the sum of its proper divisors (8498913451).

25493950389 is a wasteful number, since it uses less digits than its factorization.

25493950389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232499.

The product of its (nonzero) digits is 10497600, while the sum is 57.

The spelling of 25493950389 in words is "twenty-five billion, four hundred ninety-three million, nine hundred fifty thousand, three hundred eighty-nine".