1125015401 has 4 divisors (see below), whose sum is σ = 1125272832. Its totient is φ = 1124757972.

The previous prime is 1125015347. The next prime is 1125015413. The reversal of 1125015401 is 1045105211.

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 a cyclic number.

It is not a de Polignac number, because 1125015401 - 2¹⁴ = 1124999017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125015431) 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, 122045 + ... + 130938.

It is an arithmetic number, because the mean of its divisors is an integer number (281318208).

Almost surely, 2^1125015401 is an apocalyptic number.

It is an amenable number.

1125015401 is a deficient number, since it is larger than the sum of its proper divisors (257431).

1125015401 is an equidigital number, since it uses as much as digits as its factorization.

1125015401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257430.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1125015401 is about 33541.2492462639. The cubic root of 1125015401 is about 1040.0466574852.

The spelling of 1125015401 in words is "one billion, one hundred twenty-five million, fifteen thousand, four hundred one".