1131107425 has 36 divisors (see below), whose sum is σ = 1642779900. Its totient is φ = 770286720.

The previous prime is 1131107401. The next prime is 1131107429. The reversal of 1131107425 is 5247011311.

It can be written as a sum of positive squares in 6 ways, for example, as 182898576 + 948208849 = 13524^2 + 30793^2 .

It is not a de Polignac number, because 1131107425 - 2²⁷ = 996889697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1131107425.

It is not an unprimeable number, because it can be changed into a prime (1131107429) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 179427 + ... + 185623.

It is an arithmetic number, because the mean of its divisors is an integer number (45632775).

Almost surely, 2^1131107425 is an apocalyptic number.

It is an amenable number.

1131107425 is a deficient number, since it is larger than the sum of its proper divisors (511672475).

1131107425 is a wasteful number, since it uses less digits than its factorization.

1131107425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6370 (or 6358 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1131107425 is about 33631.9405476401. The cubic root of 1131107425 is about 1041.9205835046.

Adding to 1131107425 its reverse (5247011311), we get a palindrome (6378118736).

The spelling of 1131107425 in words is "one billion, one hundred thirty-one million, one hundred seven thousand, four hundred twenty-five".