25324193893 has 4 divisors (see below), whose sum is σ = 25574928588. Its totient is φ = 25073459200.

The previous prime is 25324193891. The next prime is 25324193929. The reversal of 25324193893 is 39839142352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24974429089 + 349764804 = 158033^2 + 18702^2 .

It is a cyclic number.

It is not a de Polignac number, because 25324193893 - 2¹ = 25324193891 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25324193891) 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, 125367196 + ... + 125367397.

It is an arithmetic number, because the mean of its divisors is an integer number (6393732147).

Almost surely, 2^25324193893 is an apocalyptic number.

It is an amenable number.

25324193893 is a deficient number, since it is larger than the sum of its proper divisors (250734695).

25324193893 is a wasteful number, since it uses less digits than its factorization.

25324193893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250734694.

The product of its digits is 1399680, while the sum is 49.

The spelling of 25324193893 in words is "twenty-five billion, three hundred twenty-four million, one hundred ninety-three thousand, eight hundred ninety-three".