25045216429 has 4 divisors (see below), whose sum is σ = 25056237276. Its totient is φ = 25034195584.

The previous prime is 25045216403. The next prime is 25045216433. The reversal of 25045216429 is 92461254052.

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 22930136329 + 2115080100 = 151427^2 + 45990^2 .

It is a cyclic number.

It is not a de Polignac number, because 25045216429 - 2⁵ = 25045216397 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25045216391 and 25045216400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25045216439) 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, 5507014 + ... + 5511559.

It is an arithmetic number, because the mean of its divisors is an integer number (6264059319).

Almost surely, 2^25045216429 is an apocalyptic number.

It is an amenable number.

25045216429 is a deficient number, since it is larger than the sum of its proper divisors (11020847).

25045216429 is a wasteful number, since it uses less digits than its factorization.

25045216429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11020846.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 25045216429 in words is "twenty-five billion, forty-five million, two hundred sixteen thousand, four hundred twenty-nine".