25385730241 has 9 divisors (see below), whose sum is σ = 25521079809. Its totient is φ = 25251097236.

The previous prime is 25385730239. The next prime is 25385730263. The reversal of 25385730241 is 14203758352.

The square root of 25385730241 is 159329.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 25385730241 - 2¹ = 25385730239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25385730194 and 25385730203.

It is not an unprimeable number, because it can be changed into a prime (25385730211) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 45089826 + ... + 45090388.

Almost surely, 2^25385730241 is an apocalyptic number.

25385730241 is the 159329-th square number.

25385730241 is the 79665-th centered octagonal number.

It is an amenable number.

25385730241 is a deficient number, since it is larger than the sum of its proper divisors (135349568).

25385730241 is an frugal number, since it uses more digits than its factorization.

25385730241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 25385730241 in words is "twenty-five billion, three hundred eighty-five million, seven hundred thirty thousand, two hundred forty-one".