125618387 has 4 divisors (see below), whose sum is σ = 131080080. Its totient is φ = 120156696.

The previous prime is 125618377. The next prime is 125618393. The reversal of 125618387 is 783816521.

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 125618387 - 2⁸ = 125618131 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125618347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2730812 + ... + 2730857.

It is an arithmetic number, because the mean of its divisors is an integer number (32770020).

Almost surely, 2^125618387 is an apocalyptic number.

125618387 is a deficient number, since it is larger than the sum of its proper divisors (5461693).

125618387 is an equidigital number, since it uses as much as digits as its factorization.

125618387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461692.

The product of its digits is 80640, while the sum is 41.

The square root of 125618387 is about 11207.9608760916. The cubic root of 125618387 is about 500.8231600713.

The spelling of 125618387 in words is "one hundred twenty-five million, six hundred eighteen thousand, three hundred eighty-seven".