251234245125 has 48 divisors (see below), whose sum is σ = 453100018800. Its totient is φ = 133929936000.

The previous prime is 251234245123. The next prime is 251234245139. The reversal of 251234245125 is 521542432152.

251234245125 is a `hidden beast` number, since 25 + 123 + 42 + 451 + 25 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 79326159201 + 171908085924 = 281649^2 + 414618^2 .

It is not a de Polignac number, because 251234245125 - 2¹ = 251234245123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 251234245125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251234245123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2448351 + ... + 2548899.

It is an arithmetic number, because the mean of its divisors is an integer number (9439583725).

Almost surely, 2^251234245125 is an apocalyptic number.

251234245125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251234245125 is a deficient number, since it is larger than the sum of its proper divisors (201865773675).

251234245125 is a wasteful number, since it uses less digits than its factorization.

251234245125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102791 (or 102778 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

Adding to 251234245125 its reverse (521542432152), we get a palindrome (772776677277).

The spelling of 251234245125 in words is "two hundred fifty-one billion, two hundred thirty-four million, two hundred forty-five thousand, one hundred twenty-five".