125213044025 has 24 divisors (see below), whose sum is σ = 160624611480. Its totient is φ = 96751618560.

The previous prime is 125213044013. The next prime is 125213044037. The reversal of 125213044025 is 520440312521.

It is an interprime number because it is at equal distance from previous prime (125213044013) and next prime (125213044037).

It can be written as a sum of positive squares in 12 ways, for example, as 18247416889 + 106965627136 = 135083^2 + 327056^2 .

It is a de Polignac number, because none of the positive numbers 2^k-125213044025 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 367310 + ... + 620759.

It is an arithmetic number, because the mean of its divisors is an integer number (6692692145).

Almost surely, 2^125213044025 is an apocalyptic number.

It is an amenable number.

125213044025 is a deficient number, since it is larger than the sum of its proper divisors (35411567455).

125213044025 is a wasteful number, since it uses less digits than its factorization.

125213044025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988253 (or 988248 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 125213044025 its reverse (520440312521), we get a palindrome (645653356546).

The spelling of 125213044025 in words is "one hundred twenty-five billion, two hundred thirteen million, forty-four thousand, twenty-five".