125112506 has 4 divisors (see below), whose sum is σ = 187668762. Its totient is φ = 62556252.

The previous prime is 125112451. The next prime is 125112523. The reversal of 125112506 is 605211521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605211521 = 1091 ⋅554731.

It can be written as a sum of positive squares in only one way, i.e., 125104225 + 8281 = 11185^2 + 91^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31278125 + ... + 31278128.

Almost surely, 2^125112506 is an apocalyptic number.

125112506 is a deficient number, since it is larger than the sum of its proper divisors (62556256).

125112506 is an equidigital number, since it uses as much as digits as its factorization.

125112506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62556255.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 125112506 is about 11185.3701771555. The cubic root of 125112506 is about 500.1499630177.

The spelling of 125112506 in words is "one hundred twenty-five million, one hundred twelve thousand, five hundred six".