425102520 has 64 divisors (see below), whose sum is σ = 1282741920. Its totient is φ = 112699904.

The previous prime is 425102519. The next prime is 425102543. The reversal of 425102520 is 25201524.

It is a happy number.

It is a congruent number.

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, 10522 + ... + 30998.

Almost surely, 2^425102520 is an apocalyptic number.

425102520 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 425102520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641370960).

425102520 is an abundant number, since it is smaller than the sum of its proper divisors (857639400).

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

425102520 is a wasteful number, since it uses less digits than its factorization.

425102520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20664 (or 20660 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 425102520 is about 20618.0144533852. The cubic root of 425102520 is about 751.9077476617.

The spelling of 425102520 in words is "four hundred twenty-five million, one hundred two thousand, five hundred twenty".