125123355 has 24 divisors (see below), whose sum is σ = 247864032. Its totient is φ = 57199104.

The previous prime is 125123351. The next prime is 125123357. The reversal of 125123355 is 553321521.

It is a happy number.

It is not a de Polignac number, because 125123355 - 2² = 125123351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125123351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198294 + ... + 198923.

It is an arithmetic number, because the mean of its divisors is an integer number (10327668).

Almost surely, 2^125123355 is an apocalyptic number.

125123355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125123355 is a deficient number, since it is larger than the sum of its proper divisors (122740677).

125123355 is a wasteful number, since it uses less digits than its factorization.

125123355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397235 (or 397232 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 125123355 is about 11185.8551304762. The cubic root of 125123355 is about 500.1644192600.

Adding to 125123355 its reverse (553321521), we get a palindrome (678444876).

The spelling of 125123355 in words is "one hundred twenty-five million, one hundred twenty-three thousand, three hundred fifty-five".