525430642 has 24 divisors (see below), whose sum is σ = 896193900. Its totient is φ = 230593440.

The previous prime is 525430603. The next prime is 525430643. The reversal of 525430642 is 246034525.

It can be written as a sum of positive squares in 2 ways, for example, as 518973961 + 6456681 = 22781^2 + 2541^2 .

It is not an unprimeable number, because it can be changed into a prime (525430643) 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, 30417 + ... + 44452.

Almost surely, 2^525430642 is an apocalyptic number.

525430642 is a deficient number, since it is larger than the sum of its proper divisors (370763258).

525430642 is a wasteful number, since it uses less digits than its factorization.

525430642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74922 (or 74911 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 525430642 is about 22922.2739273398. The cubic root of 525430642 is about 806.9348373767.

The spelling of 525430642 in words is "five hundred twenty-five million, four hundred thirty thousand, six hundred forty-two".