525243870 has 48 divisors (see below), whose sum is σ = 1425015072. Its totient is φ = 133974720.

The previous prime is 525243869. The next prime is 525243877. The reversal of 525243870 is 78342525.

525243870 is a `hidden beast` number, since 52 + 524 + 3 + 87 + 0 = 666.

It is a super-2 number, since 2×525243870² = 551762245945153800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525243877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124801 + ... + 128940.

It is an arithmetic number, because the mean of its divisors is an integer number (29687814).

Almost surely, 2^525243870 is an apocalyptic number.

525243870 is an abundant number, since it is smaller than the sum of its proper divisors (899771202).

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

525243870 is a wasteful number, since it uses less digits than its factorization.

525243870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253777 (or 253774 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 525243870 is about 22918.1995366128. The cubic root of 525243870 is about 806.8392137856.

The spelling of 525243870 in words is "five hundred twenty-five million, two hundred forty-three thousand, eight hundred seventy".