425400040 has 48 divisors (see below), whose sum is σ = 1036457100. Its totient is φ = 157068288.

The previous prime is 425400037. The next prime is 425400049. The reversal of 425400040 is 40004524.

It can be written as a sum of positive squares in 6 ways, for example, as 71132356 + 354267684 = 8434^2 + 18822^2 .

It is a junction number, because it is equal to n+sod(n) for n = 425399990 and 425400017.

It is not an unprimeable number, because it can be changed into a prime (425400049) 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, 24705 + ... + 38224.

Almost surely, 2^425400040 is an apocalyptic number.

425400040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425400040 is an abundant number, since it is smaller than the sum of its proper divisors (611057060).

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

425400040 is a wasteful number, since it uses less digits than its factorization.

425400040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62966 (or 62949 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 425400040 is about 20625.2282411614. The cubic root of 425400040 is about 752.0831213763.

Adding to 425400040 its reverse (40004524), we get a palindrome (465404564).

The spelling of 425400040 in words is "four hundred twenty-five million, four hundred thousand, forty".