1125115401 has 4 divisors (see below), whose sum is σ = 1500153872. Its totient is φ = 750076932.

The previous prime is 1125115391. The next prime is 1125115421. The reversal of 1125115401 is 1045115211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1125115401 - 2⁷ = 1125115273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125115421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187519231 + ... + 187519236.

It is an arithmetic number, because the mean of its divisors is an integer number (375038468).

Almost surely, 2^1125115401 is an apocalyptic number.

It is an amenable number.

1125115401 is a deficient number, since it is larger than the sum of its proper divisors (375038471).

1125115401 is an equidigital number, since it uses as much as digits as its factorization.

1125115401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375038470.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1125115401 is about 33542.7399149205. The cubic root of 1125115401 is about 1040.0774723476.

The spelling of 1125115401 in words is "one billion, one hundred twenty-five million, one hundred fifteen thousand, four hundred one".