425140040 has 64 divisors (see below), whose sum is σ = 1036067760. Its totient is φ = 156072960.

The previous prime is 425140031. The next prime is 425140057. The reversal of 425140040 is 40041524.

It can be written as a sum of positive squares in 8 ways, for example, as 13942756 + 411197284 = 3734^2 + 20278^2 .

It is a super-2 number, since 2×425140040² = 361488107222403200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 425139994 and 425140021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91862 + ... + 96378.

Almost surely, 2^425140040 is an apocalyptic number.

425140040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425140040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518033880).

425140040 is an abundant number, since it is smaller than the sum of its proper divisors (610927720).

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

425140040 is a wasteful number, since it uses less digits than its factorization.

425140040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722 (or 4718 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 425140040 is about 20618.9243172383. The cubic root of 425140040 is about 751.9298684031.

Adding to 425140040 its reverse (40041524), we get a palindrome (465181564).

The spelling of 425140040 in words is "four hundred twenty-five million, one hundred forty thousand, forty".