525745740 has 192 divisors, whose sum is σ = 1734082560. Its totient is φ = 117780480.

The previous prime is 525745739. The next prime is 525745741. The reversal of 525745740 is 47547525.

It is an interprime number because it is at equal distance from previous prime (525745739) and next prime (525745741).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (525745741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 410421 + ... + 411699.

It is an arithmetic number, because the mean of its divisors is an integer number (9031680).

Almost surely, 2^525745740 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 525745740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (867041280).

525745740 is an abundant number, since it is smaller than the sum of its proper divisors (1208336820).

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

525745740 is a wasteful number, since it uses less digits than its factorization.

525745740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352 (or 1350 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 39.

The square root of 525745740 is about 22929.1460809163. The cubic root of 525745740 is about 807.0961100061.

The spelling of 525745740 in words is "five hundred twenty-five million, seven hundred forty-five thousand, seven hundred forty".