1131227406825 has 24 divisors (see below), whose sum is σ = 1871961564768. Its totient is φ = 602783998080.

The previous prime is 1131227406823. The next prime is 1131227406839. The reversal of 1131227406825 is 5286047221311.

It is not a de Polignac number, because 1131227406825 - 2¹ = 1131227406823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131227406823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6631284 + ... + 6799733.

It is an arithmetic number, because the mean of its divisors is an integer number (77998398532).

Almost surely, 2^{1131227406825} is an apocalyptic number.

1131227406825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131227406825 is a deficient number, since it is larger than the sum of its proper divisors (740734157943).

1131227406825 is a wasteful number, since it uses less digits than its factorization.

1131227406825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13432153 (or 13432148 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 1131227406825 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-seven million, four hundred six thousand, eight hundred twenty-five".