125404505315 has 4 divisors (see below), whose sum is σ = 150485406384. Its totient is φ = 100323604248.

The previous prime is 125404505309. The next prime is 125404505329. The reversal of 125404505315 is 513505404521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125404505315 - 2⁸ = 125404505059 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 12540450527 + ... + 12540450536.

It is an arithmetic number, because the mean of its divisors is an integer number (37621351596).

Almost surely, 2^125404505315 is an apocalyptic number.

125404505315 is a deficient number, since it is larger than the sum of its proper divisors (25080901069).

125404505315 is an equidigital number, since it uses as much as digits as its factorization.

125404505315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25080901068.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 125404505315 its reverse (513505404521), we get a palindrome (638909909836).

The spelling of 125404505315 in words is "one hundred twenty-five billion, four hundred four million, five hundred five thousand, three hundred fifteen".