125263751515 has 16 divisors (see below), whose sum is σ = 172080013248. Its totient is φ = 85750281216.

The previous prime is 125263751479. The next prime is 125263751533. The reversal of 125263751515 is 515157362521.

It is a cyclic number.

It is not a de Polignac number, because 125263751515 - 2⁹ = 125263751003 is a prime.

It is a super-2 number, since 2×125263751515² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2996922 + ... + 3038431.

It is an arithmetic number, because the mean of its divisors is an integer number (10755000828).

Almost surely, 2^125263751515 is an apocalyptic number.

125263751515 is a deficient number, since it is larger than the sum of its proper divisors (46816261733).

125263751515 is an equidigital number, since it uses as much as digits as its factorization.

125263751515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6035958.

The product of its digits is 315000, while the sum is 43.

The spelling of 125263751515 in words is "one hundred twenty-five billion, two hundred sixty-three million, seven hundred fifty-one thousand, five hundred fifteen".