201425043621 has 8 divisors (see below), whose sum is σ = 268575005664. Its totient is φ = 134279222000.

The previous prime is 201425043607. The next prime is 201425043649. The reversal of 201425043621 is 126340524102.

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 201425043621 - 2⁶ = 201425043557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201425043221) 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, 919755 + ... + 1117496.

It is an arithmetic number, because the mean of its divisors is an integer number (33571875708).

Almost surely, 2^201425043621 is an apocalyptic number.

It is an amenable number.

201425043621 is a deficient number, since it is larger than the sum of its proper divisors (67149962043).

201425043621 is a wasteful number, since it uses less digits than its factorization.

201425043621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070211.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 201425043621 its reverse (126340524102), we get a palindrome (327765567723).

The spelling of 201425043621 in words is "two hundred one billion, four hundred twenty-five million, forty-three thousand, six hundred twenty-one".