125313216503 has 8 divisors (see below), whose sum is σ = 128451717120. Its totient is φ = 122194393560.

The previous prime is 125313216481. The next prime is 125313216517. The reversal of 125313216503 is 305612313521.

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 125313216503 - 2¹⁸ = 125312954359 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 125313216503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125313216563) 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, 4906523 + ... + 4931996.

It is an arithmetic number, because the mean of its divisors is an integer number (16056464640).

Almost surely, 2^125313216503 is an apocalyptic number.

125313216503 is a deficient number, since it is larger than the sum of its proper divisors (3138500617).

125313216503 is an equidigital number, since it uses as much as digits as its factorization.

125313216503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9838837.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 125313216503 in words is "one hundred twenty-five billion, three hundred thirteen million, two hundred sixteen thousand, five hundred three".