1131200025 has 24 divisors (see below), whose sum is σ = 1875504960. Its totient is φ = 601611840.

The previous prime is 1131200003. The next prime is 1131200033. The reversal of 1131200025 is 5200021311.

1131200025 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 1131200025 - 2⁹ = 1131199513 is a prime.

It is a super-2 number, since 2×1131200025² = 2559226993120001250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1131199977 and 1131200013.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5919 + ... + 47931.

It is an arithmetic number, because the mean of its divisors is an integer number (78146040).

Almost surely, 2^1131200025 is an apocalyptic number.

1131200025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131200025 is a deficient number, since it is larger than the sum of its proper divisors (744304935).

1131200025 is a wasteful number, since it uses less digits than its factorization.

1131200025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42385 (or 42380 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1131200025 is about 33633.3171869799. The cubic root of 1131200025 is about 1041.9490155855.

Adding to 1131200025 its reverse (5200021311), we get a palindrome (6331221336).

The spelling of 1131200025 in words is "one billion, one hundred thirty-one million, two hundred thousand, twenty-five".