425315640 has 32 divisors (see below), whose sum is σ = 1275947280. Its totient is φ = 113417472.

The previous prime is 425315633. The next prime is 425315641. The reversal of 425315640 is 46513524.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 425315598 and 425315607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425315641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1772029 + ... + 1772268.

Almost surely, 2^425315640 is an apocalyptic number.

425315640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425315640 is an abundant number, since it is smaller than the sum of its proper divisors (850631640).

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

425315640 is a wasteful number, since it uses less digits than its factorization.

425315640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544311 (or 3544307 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 425315640 is about 20623.1821017029. The cubic root of 425315640 is about 752.0333799503.

The spelling of 425315640 in words is "four hundred twenty-five million, three hundred fifteen thousand, six hundred forty".