1131232425 has 48 divisors (see below), whose sum is σ = 1918805760. Its totient is φ = 587799040.

The previous prime is 1131232423. The next prime is 1131232447. The reversal of 1131232425 is 5242321311.

1131232425 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1131232425 - 2¹ = 1131232423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131232395 and 1131232404.

It is not an unprimeable number, because it can be changed into a prime (1131232423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 947629 + ... + 948821.

It is an arithmetic number, because the mean of its divisors is an integer number (39975120).

Almost surely, 2^1131232425 is an apocalyptic number.

1131232425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131232425 is a deficient number, since it is larger than the sum of its proper divisors (787573335).

1131232425 is a wasteful number, since it uses less digits than its factorization.

1131232425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522 (or 1517 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1131232425 is about 33633.7988487771. The cubic root of 1131232425 is about 1041.9589633769.

Adding to 1131232425 its reverse (5242321311), we get a palindrome (6373553736).

The spelling of 1131232425 in words is "one billion, one hundred thirty-one million, two hundred thirty-two thousand, four hundred twenty-five".