1125112401 has 24 divisors (see below), whose sum is σ = 1859445120. Its totient is φ = 642188736.

The previous prime is 1125112399. The next prime is 1125112403. The reversal of 1125112401 is 1042115211.

1125112401 is a `hidden beast` number, since 1 + 1 + 251 + 12 + 401 = 666.

It is an interprime number because it is at equal distance from previous prime (1125112399) and next prime (1125112403).

It is not a de Polignac number, because 1125112401 - 2¹ = 1125112399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125112403) 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, 48181 + ... + 67613.

It is an arithmetic number, because the mean of its divisors is an integer number (77476880).

Almost surely, 2^1125112401 is an apocalyptic number.

It is an amenable number.

1125112401 is a deficient number, since it is larger than the sum of its proper divisors (734332719).

1125112401 is a wasteful number, since it uses less digits than its factorization.

1125112401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20365 (or 20362 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1125112401 is about 33542.6951958247. The cubic root of 1125112401 is about 1040.0765479283.

Adding to 1125112401 its reverse (1042115211), we get a palindrome (2167227612).

It can be divided in two parts, 1125 and 112401, that added together give a triangular number (113526 = T₄₇₆).

The spelling of 1125112401 in words is "one billion, one hundred twenty-five million, one hundred twelve thousand, four hundred one".