125249907 has 4 divisors (see below), whose sum is σ = 166999880. Its totient is φ = 83499936.

The previous prime is 125249903. The next prime is 125249911. The reversal of 125249907 is 709942521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709942521 = 3 ⋅236647507.

It is an interprime number because it is at equal distance from previous prime (125249903) and next prime (125249911).

It is not a de Polignac number, because 125249907 - 2² = 125249903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125249903) 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 3 ways as a sum of consecutive naturals, for example, 20874982 + ... + 20874987.

It is an arithmetic number, because the mean of its divisors is an integer number (41749970).

Almost surely, 2^125249907 is an apocalyptic number.

125249907 is a deficient number, since it is larger than the sum of its proper divisors (41749973).

125249907 is an equidigital number, since it uses as much as digits as its factorization.

125249907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41749972.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 125249907 is about 11191.5104878653. The cubic root of 125249907 is about 500.3329875227.

The spelling of 125249907 in words is "one hundred twenty-five million, two hundred forty-nine thousand, nine hundred seven".