1125208631 has 8 divisors (see below), whose sum is σ = 1192685760. Its totient is φ = 1057874688.

The previous prime is 1125208627. The next prime is 1125208657. The reversal of 1125208631 is 1368025211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125208631 - 2² = 1125208627 is a prime.

It is a super-2 number, since 2×1125208631² = 2532188926553788322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1125208594 and 1125208603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125208621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19391 + ... + 51248.

It is an arithmetic number, because the mean of its divisors is an integer number (149085720).

Almost surely, 2^1125208631 is an apocalyptic number.

1125208631 is a deficient number, since it is larger than the sum of its proper divisors (67477129).

1125208631 is an equidigital number, since it uses as much as digits as its factorization.

1125208631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71593.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1125208631 is about 33544.1296056404. The cubic root of 1125208631 is about 1040.1061993992.

The spelling of 1125208631 in words is "one billion, one hundred twenty-five million, two hundred eight thousand, six hundred thirty-one".