1258012255499 has 8 divisors (see below), whose sum is σ = 1258421230080. Its totient is φ = 1257603354216.

The previous prime is 1258012255477. The next prime is 1258012255523. The reversal of 1258012255499 is 9945522108521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1258012255499 - 2²⁸ = 1257743820043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1258012255499.

It is not an unprimeable number, because it can be changed into a prime (1258012255699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77728562 + ... + 77744744.

It is an arithmetic number, because the mean of its divisors is an integer number (157302653760).

Almost surely, 2^{1258012255499} is an apocalyptic number.

1258012255499 is a deficient number, since it is larger than the sum of its proper divisors (408974581).

1258012255499 is a wasteful number, since it uses less digits than its factorization.

1258012255499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36649.

The product of its (nonzero) digits is 2592000, while the sum is 53.

The spelling of 1258012255499 in words is "one trillion, two hundred fifty-eight billion, twelve million, two hundred fifty-five thousand, four hundred ninety-nine".