201425201844 has 48 divisors (see below), whose sum is σ = 472088594880. Its totient is φ = 66842496000.

The previous prime is 201425201837. The next prime is 201425201909. The reversal of 201425201844 is 448102524102.

It is a super-2 number, since 2×201425201844² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6819492 + ... + 6848964.

It is an arithmetic number, because the mean of its divisors is an integer number (9835179060).

Almost surely, 2^201425201844 is an apocalyptic number.

It is an amenable number.

201425201844 is an abundant number, since it is smaller than the sum of its proper divisors (270663393036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201425201844 is a wasteful number, since it uses less digits than its factorization.

201425201844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32000 (or 31998 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

Adding to 201425201844 its reverse (448102524102), we get a palindrome (649527725946).

The spelling of 201425201844 in words is "two hundred one billion, four hundred twenty-five million, two hundred one thousand, eight hundred forty-four".