423540225 has 48 divisors (see below), whose sum is σ = 792806400. Its totient is φ = 221607360.

The previous prime is 423540211. The next prime is 423540241. The reversal of 423540225 is 522045324.

It is a happy number.

423540225 is a `hidden beast` number, since 4 + 235 + 402 + 25 = 666.

It is not a de Polignac number, because 423540225 - 2⁷ = 423540097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29856 + ... + 41694.

It is an arithmetic number, because the mean of its divisors is an integer number (16516800).

Almost surely, 2^423540225 is an apocalyptic number.

423540225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

423540225 is a deficient number, since it is larger than the sum of its proper divisors (369266175).

423540225 is a wasteful number, since it uses less digits than its factorization.

423540225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11911 (or 11900 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 423540225 is about 20580.0929298193. The cubic root of 423540225 is about 750.9855044740.

Adding to 423540225 its reverse (522045324), we get a palindrome (945585549).

The spelling of 423540225 in words is "four hundred twenty-three million, five hundred forty thousand, two hundred twenty-five".