425340240 has 80 divisors (see below), whose sum is σ = 1419992448. Its totient is φ = 104698368.

The previous prime is 425340233. The next prime is 425340257. The reversal of 425340240 is 42043524.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 425340240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65044 + ... + 71283.

Almost surely, 2^425340240 is an apocalyptic number.

425340240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425340240 is an abundant number, since it is smaller than the sum of its proper divisors (994652208).

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

425340240 is a wasteful number, since it uses less digits than its factorization.

425340240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136356 (or 136350 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 425340240 is about 20623.7785092839. The cubic root of 425340240 is about 752.0478787231.

Adding to 425340240 its reverse (42043524), we get a palindrome (467383764).

The spelling of 425340240 in words is "four hundred twenty-five million, three hundred forty thousand, two hundred forty".