25189448393 has 4 divisors (see below), whose sum is σ = 25189989120. Its totient is φ = 25188907668.

The previous prime is 25189448357. The next prime is 25189448429. The reversal of 25189448393 is 39384498152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (25189448357) and next prime (25189448429).

It is a cyclic number.

It is not a de Polignac number, because 25189448393 - 2¹⁸ = 25189186249 is a prime.

It is a super-2 number, since 2×25189448393² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25189448293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193133 + ... + 296106.

It is an arithmetic number, because the mean of its divisors is an integer number (6297497280).

Almost surely, 2^25189448393 is an apocalyptic number.

It is an amenable number.

25189448393 is a deficient number, since it is larger than the sum of its proper divisors (540727).

25189448393 is an equidigital number, since it uses as much as digits as its factorization.

25189448393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540726.

The product of its digits is 7464960, while the sum is 56.

The spelling of 25189448393 in words is "twenty-five billion, one hundred eighty-nine million, four hundred forty-eight thousand, three hundred ninety-three".