525023731 has 4 divisors (see below), whose sum is σ = 525211632. Its totient is φ = 524835832.

The previous prime is 525023693. The next prime is 525023761. The reversal of 525023731 is 137320525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 525023731 - 2¹⁷ = 524892659 is a prime.

It is a super-2 number, since 2×525023731² = 551299836226320722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525023731.

It is not an unprimeable number, because it can be changed into a prime (525023761) 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 3 ways as a sum of consecutive naturals, for example, 89695 + ... + 95368.

It is an arithmetic number, because the mean of its divisors is an integer number (131302908).

Almost surely, 2^525023731 is an apocalyptic number.

525023731 is a deficient number, since it is larger than the sum of its proper divisors (187901).

525023731 is a wasteful number, since it uses less digits than its factorization.

525023731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187900.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 525023731 is about 22913.3963218027. The cubic root of 525023731 is about 806.7264778371.

The spelling of 525023731 in words is "five hundred twenty-five million, twenty-three thousand, seven hundred thirty-one".