125633987 has 2 divisors, whose sum is σ = 125633988. Its totient is φ = 125633986.

The previous prime is 125633983. The next prime is 125633999. The reversal of 125633987 is 789336521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125633987 - 2² = 125633983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125633983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62816993 + 62816994.

It is an arithmetic number, because the mean of its divisors is an integer number (62816994).

Almost surely, 2^125633987 is an apocalyptic number.

125633987 is a deficient number, since it is larger than the sum of its proper divisors (1).

125633987 is an equidigital number, since it uses as much as digits as its factorization.

125633987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 125633987 is about 11208.6567883935. The cubic root of 125633987 is about 500.8438908950.

The spelling of 125633987 in words is "one hundred twenty-five million, six hundred thirty-three thousand, nine hundred eighty-seven".