125012555 has 4 divisors (see below), whose sum is σ = 150015072. Its totient is φ = 100010040.

The previous prime is 125012539. The next prime is 125012557. The reversal of 125012555 is 555210521.

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

It is not a de Polignac number, because 125012555 - 2⁴ = 125012539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125012557) 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, 12501251 + ... + 12501260.

It is an arithmetic number, because the mean of its divisors is an integer number (37503768).

Almost surely, 2^125012555 is an apocalyptic number.

125012555 is a deficient number, since it is larger than the sum of its proper divisors (25002517).

125012555 is an equidigital number, since it uses as much as digits as its factorization.

125012555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25002516.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 125012555 is about 11180.9013500701. The cubic root of 125012555 is about 500.0167394396.

The spelling of 125012555 in words is "one hundred twenty-five million, twelve thousand, five hundred fifty-five".