525310380 has 144 divisors (see below), whose sum is σ = 1901219040. Its totient is φ = 120064896.

The previous prime is 525310367. The next prime is 525310417. The reversal of 525310380 is 83013525.

525310380 is a `hidden beast` number, since 52 + 531 + 0 + 3 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16534 + ... + 36386.

It is an arithmetic number, because the mean of its divisors is an integer number (13202910).

Almost surely, 2^525310380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525310380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (950609520).

525310380 is an abundant number, since it is smaller than the sum of its proper divisors (1375908660).

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

525310380 is a wasteful number, since it uses less digits than its factorization.

525310380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19885 (or 19870 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 525310380 is about 22919.6505208958. The cubic root of 525310380 is about 806.8732681962.

The spelling of 525310380 in words is "five hundred twenty-five million, three hundred ten thousand, three hundred eighty".