525378 has 24 divisors (see below), whose sum is σ = 1222992. Its totient is φ = 150024.

The previous prime is 525377. The next prime is 525379. The reversal of 525378 is 873525.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (525377) and next prime (525379).

It is a d-powerful number, because it can be written as 5 + 2¹⁹ + 3⁶ + 5 + 7³ + 8 .

It is not an unprimeable number, because it can be changed into a prime (525373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 600 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (50958).

2⁵²⁵³⁷⁸ is an apocalyptic number.

525378 is an abundant number, since it is smaller than the sum of its proper divisors (697614).

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

525378 is a wasteful number, since it uses less digits than its factorization.

525378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806 (or 1799 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 525378 is about 724.8296351557. The cubic root of 525378 is about 80.6907888002.

It can be divided in two parts, 525 and 378, that added together give a triangular number (903 = T₄₂).

The spelling of 525378 in words is "five hundred twenty-five thousand, three hundred seventy-eight".