201425111 has 8 divisors (see below), whose sum is σ = 205921344. Its totient is φ = 196967520.

The previous prime is 201425089. The next prime is 201425117. The reversal of 201425111 is 111524102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201425111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201425111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201425117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010 + ... + 20096.

It is an arithmetic number, because the mean of its divisors is an integer number (25740168).

Almost surely, 2^201425111 is an apocalyptic number.

201425111 is a deficient number, since it is larger than the sum of its proper divisors (4496233).

201425111 is a wasteful number, since it uses less digits than its factorization.

201425111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19321.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 201425111 is about 14192.4314689203. The cubic root of 201425111 is about 586.1892780840.

Adding to 201425111 its reverse (111524102), we get a palindrome (312949213).

The spelling of 201425111 in words is "two hundred one million, four hundred twenty-five thousand, one hundred eleven".