201425021 has 8 divisors (see below), whose sum is σ = 230294784. Its totient is φ = 172578960.

The previous prime is 201425009. The next prime is 201425051. The reversal of 201425021 is 120524102.

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

It is a cyclic number.

It is not a de Polignac number, because 201425021 - 2²⁶ = 134316157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201425051) 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, 19676 + ... + 28106.

It is an arithmetic number, because the mean of its divisors is an integer number (28786848).

Almost surely, 2^201425021 is an apocalyptic number.

It is an amenable number.

201425021 is a deficient number, since it is larger than the sum of its proper divisors (28869763).

201425021 is an equidigital number, since it uses as much as digits as its factorization.

201425021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11851.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 201425021 is about 14192.4282982159. The cubic root of 201425021 is about 586.1891907777.

Adding to 201425021 its reverse (120524102), we get a palindrome (321949123).

The spelling of 201425021 in words is "two hundred one million, four hundred twenty-five thousand, twenty-one".