525374440 has 64 divisors (see below), whose sum is σ = 1240272000. Its totient is φ = 200014080.

The previous prime is 525374431. The next prime is 525374449. The reversal of 525374440 is 44473525.

It is an interprime number because it is at equal distance from previous prime (525374431) and next prime (525374449).

It is a junction number, because it is equal to n+sod(n) for n = 525374396 and 525374405.

It is not an unprimeable number, because it can be changed into a prime (525374449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79171 + ... + 85549.

It is an arithmetic number, because the mean of its divisors is an integer number (19379250).

Almost surely, 2^525374440 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 525374440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620136000).

525374440 is an abundant number, since it is smaller than the sum of its proper divisors (714897560).

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

525374440 is a wasteful number, since it uses less digits than its factorization.

525374440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6490 (or 6486 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 34.

The square root of 525374440 is about 22921.0479690611. The cubic root of 525374440 is about 806.9060654418.

The spelling of 525374440 in words is "five hundred twenty-five million, three hundred seventy-four thousand, four hundred forty".