25380538193 has 4 divisors (see below), whose sum is σ = 25381858800. Its totient is φ = 25379217588.

The previous prime is 25380538189. The next prime is 25380538231. The reversal of 25380538193 is 39183508352.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 25380538193 - 2² = 25380538189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25380538133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631043 + ... + 670056.

It is an arithmetic number, because the mean of its divisors is an integer number (6345464700).

Almost surely, 2^25380538193 is an apocalyptic number.

It is an amenable number.

25380538193 is a deficient number, since it is larger than the sum of its proper divisors (1320607).

25380538193 is a wasteful number, since it uses less digits than its factorization.

25380538193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320606.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 25380538193 in words is "twenty-five billion, three hundred eighty million, five hundred thirty-eight thousand, one hundred ninety-three".