25352529145 has 8 divisors (see below), whose sum is σ = 30692266056. Its totient is φ = 20102535936.

The previous prime is 25352529133. The next prime is 25352529161. The reversal of 25352529145 is 54192525352.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9162729 + 25343366416 = 3027^2 + 159196^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25352529145 - 2⁹ = 25352528633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22435302 + ... + 22436431.

It is an arithmetic number, because the mean of its divisors is an integer number (3836533257).

Almost surely, 2^25352529145 is an apocalyptic number.

It is an amenable number.

25352529145 is a deficient number, since it is larger than the sum of its proper divisors (5339736911).

25352529145 is a wasteful number, since it uses less digits than its factorization.

25352529145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44871851.

The product of its digits is 540000, while the sum is 43.

The spelling of 25352529145 in words is "twenty-five billion, three hundred fifty-two million, five hundred twenty-nine thousand, one hundred forty-five".