240520261925 has 6 divisors (see below), whose sum is σ = 298245124818. Its totient is φ = 192416209520.

The previous prime is 240520261921. The next prime is 240520262011. The reversal of 240520261925 is 529162025042.

It can be written as a sum of positive squares in 3 ways, for example, as 45966931201 + 194553330724 = 214399^2 + 441082^2 .

It is not a de Polignac number, because 240520261925 - 2² = 240520261921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240520261921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4810405214 + ... + 4810405263.

It is an arithmetic number, because the mean of its divisors is an integer number (49707520803).

Almost surely, 2^240520261925 is an apocalyptic number.

240520261925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

240520261925 is a deficient number, since it is larger than the sum of its proper divisors (57724862893).

240520261925 is an equidigital number, since it uses as much as digits as its factorization.

240520261925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9620810487 (or 9620810482 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 240520261925 its reverse (529162025042), we get a palindrome (769682286967).

The spelling of 240520261925 in words is "two hundred forty billion, five hundred twenty million, two hundred sixty-one thousand, nine hundred twenty-five".