11125172401 has 4 divisors (see below), whose sum is σ = 12714482752. Its totient is φ = 9535862052.

The previous prime is 11125172369. The next prime is 11125172407. The reversal of 11125172401 is 10427152111.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10427152111 = 131 ⋅79596581.

It is a cyclic number.

It is not a de Polignac number, because 11125172401 - 2⁵ = 11125172369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11125172407) 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, 794655165 + ... + 794655178.

It is an arithmetic number, because the mean of its divisors is an integer number (3178620688).

Almost surely, 2^11125172401 is an apocalyptic number.

It is an amenable number.

11125172401 is a deficient number, since it is larger than the sum of its proper divisors (1589310351).

11125172401 is an equidigital number, since it uses as much as digits as its factorization.

11125172401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589310350.

The product of its (nonzero) digits is 560, while the sum is 25.

The spelling of 11125172401 in words is "eleven billion, one hundred twenty-five million, one hundred seventy-two thousand, four hundred one".