125625997 has 4 divisors (see below), whose sum is σ = 143572576. Its totient is φ = 107679420.

The previous prime is 125625943. The next prime is 125626001. The reversal of 125625997 is 799526521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125625997 is a prime.

It is a super-2 number, since 2×125625997² = 31563782244488018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125635997) 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, 8973279 + ... + 8973292.

It is an arithmetic number, because the mean of its divisors is an integer number (35893144).

Almost surely, 2^125625997 is an apocalyptic number.

It is an amenable number.

125625997 is a deficient number, since it is larger than the sum of its proper divisors (17946579).

125625997 is an equidigital number, since it uses as much as digits as its factorization.

125625997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17946578.

The product of its digits is 340200, while the sum is 46.

The square root of 125625997 is about 11208.3003617855. The cubic root of 125625997 is about 500.8332732068.

The spelling of 125625997 in words is "one hundred twenty-five million, six hundred twenty-five thousand, nine hundred ninety-seven".