240305425 has 12 divisors (see below), whose sum is σ = 298564720. Its totient is φ = 191866320.

The previous prime is 240305423. The next prime is 240305447. The reversal of 240305425 is 524503042.

It is not a de Polignac number, because 240305425 - 2¹ = 240305423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 240305425.

It is not an unprimeable number, because it can be changed into a prime (240305423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3886 + ... + 22264.

Almost surely, 2^240305425 is an apocalyptic number.

240305425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

240305425 is a deficient number, since it is larger than the sum of its proper divisors (58259295).

240305425 is a wasteful number, since it uses less digits than its factorization.

240305425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18912 (or 18907 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 240305425 is about 15501.7878001216. The cubic root of 240305425 is about 621.7100079114.

Adding to 240305425 its reverse (524503042), we get a palindrome (764808467).

The spelling of 240305425 in words is "two hundred forty million, three hundred five thousand, four hundred twenty-five".