125234440425 has 18 divisors (see below), whose sum is σ = 224308798142. Its totient is φ = 66791701440.

The previous prime is 125234440381. The next prime is 125234440439. The reversal of 125234440425 is 524044432521.

125234440425 is a `hidden beast` number, since 1 + 252 + 344 + 40 + 4 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 6439099536 + 118795340889 = 80244^2 + 344667^2 .

It is not a de Polignac number, because 125234440425 - 2⁸ = 125234440169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125234440425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 278298532 + ... + 278298981.

Almost surely, 2^125234440425 is an apocalyptic number.

125234440425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125234440425 is a deficient number, since it is larger than the sum of its proper divisors (99074357717).

125234440425 is a wasteful number, since it uses less digits than its factorization.

125234440425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556597529 (or 556597521 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 125234440425 its reverse (524044432521), we get a palindrome (649278872946).

It can be divided in two parts, 1252344 and 40425, that added together give a square (1292769 = 1137²).

The spelling of 125234440425 in words is "one hundred twenty-five billion, two hundred thirty-four million, four hundred forty thousand, four hundred twenty-five".