201425623 has 6 divisors (see below), whose sum is σ = 234311496. Its totient is φ = 172650492.

The previous prime is 201425621. The next prime is 201425633. The reversal of 201425623 is 326524102.

It is not a de Polignac number, because 201425623 - 2¹ = 201425621 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 (201425621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2055315 + ... + 2055412.

It is an arithmetic number, because the mean of its divisors is an integer number (39051916).

Almost surely, 2^201425623 is an apocalyptic number.

201425623 is a deficient number, since it is larger than the sum of its proper divisors (32885873).

201425623 is an equidigital number, since it uses as much as digits as its factorization.

201425623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110741 (or 4110734 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 201425623 is about 14192.4495066919. The cubic root of 201425623 is about 586.1897747593.

Adding to 201425623 its reverse (326524102), we get a palindrome (527949725).

The spelling of 201425623 in words is "two hundred one million, four hundred twenty-five thousand, six hundred twenty-three".