251441205425 has 12 divisors (see below), whose sum is σ = 312564631116. Its totient is φ = 200651328000.

The previous prime is 251441205371. The next prime is 251441205469. The reversal of 251441205425 is 524502144152.

It can be written as a sum of positive squares in 6 ways, for example, as 4870364944 + 246570840481 = 69788^2 + 496559^2 .

It is not a de Polignac number, because 251441205425 - 2¹⁰ = 251441204401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12530684 + ... + 12550733.

It is an arithmetic number, because the mean of its divisors is an integer number (26047052593).

Almost surely, 2^251441205425 is an apocalyptic number.

251441205425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251441205425 is a deficient number, since it is larger than the sum of its proper divisors (61123425691).

251441205425 is a wasteful number, since it uses less digits than its factorization.

251441205425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25081828 (or 25081823 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 251441205425 its reverse (524502144152), we get a palindrome (775943349577).

The spelling of 251441205425 in words is "two hundred fifty-one billion, four hundred forty-one million, two hundred five thousand, four hundred twenty-five".