25520007241 has 8 divisors (see below), whose sum is σ = 26150128200. Its totient is φ = 24890252160.

The previous prime is 25520007217. The next prime is 25520007251. The reversal of 25520007241 is 14270002552.

It can be written as a sum of positive squares in 4 ways, for example, as 604963216 + 24915044025 = 24596^2 + 157845^2 .

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 25520007241 - 2¹³ = 25519999049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25520007251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52515 + ... + 231943.

It is an arithmetic number, because the mean of its divisors is an integer number (3268766025).

Almost surely, 2^25520007241 is an apocalyptic number.

It is an amenable number.

25520007241 is a deficient number, since it is larger than the sum of its proper divisors (630120959).

25520007241 is a wasteful number, since it uses less digits than its factorization.

25520007241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182939.

The product of its (nonzero) digits is 5600, while the sum is 28.

Adding to 25520007241 its reverse (14270002552), we get a palindrome (39790009793).

The spelling of 25520007241 in words is "twenty-five billion, five hundred twenty million, seven thousand, two hundred forty-one".