1250626513 has 2 divisors, whose sum is σ = 1250626514. Its totient is φ = 1250626512.

The previous prime is 1250626499. The next prime is 1250626519. The reversal of 1250626513 is 3156260521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1157156289 + 93470224 = 34017^2 + 9668^2 .

It is an emirp because it is prime and its reverse (3156260521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1250626513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1250626519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625313256 + 625313257.

It is an arithmetic number, because the mean of its divisors is an integer number (625313257).

Almost surely, 2^1250626513 is an apocalyptic number.

It is an amenable number.

1250626513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250626513 is an equidigital number, since it uses as much as digits as its factorization.

1250626513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1250626513 is about 35364.1981812115. The cubic root of 1250626513 is about 1077.3972858020.

The spelling of 1250626513 in words is "one billion, two hundred fifty million, six hundred twenty-six thousand, five hundred thirteen".