25193204345 has 4 divisors (see below), whose sum is σ = 30231845220. Its totient is φ = 20154563472.

The previous prime is 25193204329. The next prime is 25193204401. The reversal of 25193204345 is 54340239152.

It is a happy number.

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 12565513216 + 12627691129 = 112096^2 + 112373^2 .

It is a cyclic number.

It is not a de Polignac number, because 25193204345 - 2⁴ = 25193204329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25193204299 and 25193204308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2519320430 + ... + 2519320439.

It is an arithmetic number, because the mean of its divisors is an integer number (7557961305).

Almost surely, 2^25193204345 is an apocalyptic number.

It is an amenable number.

25193204345 is a deficient number, since it is larger than the sum of its proper divisors (5038640875).

25193204345 is an equidigital number, since it uses as much as digits as its factorization.

25193204345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038640874.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 25193204345 in words is "twenty-five billion, one hundred ninety-three million, two hundred four thousand, three hundred forty-five".