1125632987 has 2 divisors, whose sum is σ = 1125632988. Its totient is φ = 1125632986.

The previous prime is 1125632957. The next prime is 1125633029. The reversal of 1125632987 is 7892365211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1125632987 - 2⁶ = 1125632923 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125632927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562816493 + 562816494.

It is an arithmetic number, because the mean of its divisors is an integer number (562816494).

Almost surely, 2^1125632987 is an apocalyptic number.

1125632987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125632987 is an equidigital number, since it uses as much as digits as its factorization.

1125632987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 1125632987 is about 33550.4543486374. The cubic root of 1125632987 is about 1040.2369365857.

The spelling of 1125632987 in words is "one billion, one hundred twenty-five million, six hundred thirty-two thousand, nine hundred eighty-seven".