1125425641 has 4 divisors (see below), whose sum is σ = 1125496900. Its totient is φ = 1125354384.

The previous prime is 1125425621. The next prime is 1125425657. The reversal of 1125425641 is 1465245211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 154480041 + 970945600 = 12429^2 + 31160^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125425641 - 2²¹ = 1123328489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125425611) 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 3 ways as a sum of consecutive naturals, for example, 186 + ... + 47443.

It is an arithmetic number, because the mean of its divisors is an integer number (281374225).

Almost surely, 2^1125425641 is an apocalyptic number.

It is an amenable number.

1125425641 is a deficient number, since it is larger than the sum of its proper divisors (71259).

1125425641 is an equidigital number, since it uses as much as digits as its factorization.

1125425641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71258.

The product of its digits is 9600, while the sum is 31.

The square root of 1125425641 is about 33547.3641438489. The cubic root of 1125425641 is about 1040.1730607590.

The spelling of 1125425641 in words is "one billion, one hundred twenty-five million, four hundred twenty-five thousand, six hundred forty-one".