125515150213 has 2 divisors, whose sum is σ = 125515150214. Its totient is φ = 125515150212.

The previous prime is 125515150147. The next prime is 125515150219. The reversal of 125515150213 is 312051515521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106150201249 + 19364948964 = 325807^2 + 139158^2 .

It is a cyclic number.

It is not a de Polignac number, because 125515150213 - 2¹³ = 125515142021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125515150219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62757575106 + 62757575107.

It is an arithmetic number, because the mean of its divisors is an integer number (62757575107).

Almost surely, 2^125515150213 is an apocalyptic number.

It is an amenable number.

125515150213 is a deficient number, since it is larger than the sum of its proper divisors (1).

125515150213 is an equidigital number, since it uses as much as digits as its factorization.

125515150213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7500, while the sum is 31.

Adding to 125515150213 its reverse (312051515521), we get a palindrome (437566665734).

The spelling of 125515150213 in words is "one hundred twenty-five billion, five hundred fifteen million, one hundred fifty thousand, two hundred thirteen".