125533540225 has 6 divisors (see below), whose sum is σ = 155661589910. Its totient is φ = 100426832160.

The previous prime is 125533540199. The next prime is 125533540241. The reversal of 125533540225 is 522045335521.

It can be written as a sum of positive squares in 3 ways, for example, as 14922088336 + 110611451889 = 122156^2 + 332583^2 .

It is not a de Polignac number, because 125533540225 - 2⁵ = 125533540193 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 2510670780 + ... + 2510670829.

Almost surely, 2^125533540225 is an apocalyptic number.

It is an amenable number.

125533540225 is a deficient number, since it is larger than the sum of its proper divisors (30128049685).

125533540225 is an equidigital number, since it uses as much as digits as its factorization.

125533540225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5021341619 (or 5021341614 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 37.

Adding to 125533540225 its reverse (522045335521), we get a palindrome (647578875746).

The spelling of 125533540225 in words is "one hundred twenty-five billion, five hundred thirty-three million, five hundred forty thousand, two hundred twenty-five".