1258207499 has 2 divisors, whose sum is σ = 1258207500. Its totient is φ = 1258207498.

The previous prime is 1258207453. The next prime is 1258207501. The reversal of 1258207499 is 9947028521.

It is a strong prime.

It is an emirp because it is prime and its reverse (9947028521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1258207499 - 2⁸ = 1258207243 is a prime.

It is a super-2 number, since 2×1258207499² = 3166172221079670002, which contains 22 as substring.

Together with 1258207501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1258207409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629103749 + 629103750.

It is an arithmetic number, because the mean of its divisors is an integer number (629103750).

Almost surely, 2^1258207499 is an apocalyptic number.

1258207499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1258207499 is an equidigital number, since it uses as much as digits as its factorization.

1258207499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 1258207499 is about 35471.2207148274. The cubic root of 1258207499 is about 1079.5698730137.

The spelling of 1258207499 in words is "one billion, two hundred fifty-eight million, two hundred seven thousand, four hundred ninety-nine".