525087889 has 4 divisors (see below), whose sum is σ = 542026240. Its totient is φ = 508149540.

The previous prime is 525087883. The next prime is 525087917. The reversal of 525087889 is 988780525.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 525087889 - 2¹⁹ = 524563601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525087883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8469129 + ... + 8469190.

It is an arithmetic number, because the mean of its divisors is an integer number (135506560).

Almost surely, 2^525087889 is an apocalyptic number.

It is an amenable number.

525087889 is a deficient number, since it is larger than the sum of its proper divisors (16938351).

525087889 is a wasteful number, since it uses less digits than its factorization.

525087889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16938350.

The product of its (nonzero) digits is 1612800, while the sum is 52.

The square root of 525087889 is about 22914.7962897338. The cubic root of 525087889 is about 806.7593372085.

It can be divided in two parts, 5250 and 87889, that added together give a palindrome (93139).

The spelling of 525087889 in words is "five hundred twenty-five million, eighty-seven thousand, eight hundred eighty-nine".