125278 has 4 divisors (see below), whose sum is σ = 187920. Its totient is φ = 62638.

The previous prime is 125269. The next prime is 125287. The reversal of 125278 is 872521.

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

It is an interprime number because it is at equal distance from previous prime (125269) and next prime (125287).

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

It is a congruent number.

It is an unprimeable number.

125278 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31318 + ... + 31321.

It is an arithmetic number, because the mean of its divisors is an integer number (46980).

2¹²⁵²⁷⁸ is an apocalyptic number.

125278 is a deficient number, since it is larger than the sum of its proper divisors (62642).

125278 is an equidigital number, since it uses as much as digits as its factorization.

125278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62641.

The product of its digits is 1120, while the sum is 25.

The square root of 125278 is about 353.9463236142. The cubic root of 125278 is about 50.0370392218.

Adding to 125278 its reverse (872521), we get a palindrome (997799).

It can be divided in two parts, 12 and 5278, that multiplied together give a palindrome (63336).

The spelling of 125278 in words is "one hundred twenty-five thousand, two hundred seventy-eight".