525430681 has 2 divisors, whose sum is σ = 525430682. Its totient is φ = 525430680.

The previous prime is 525430657. The next prime is 525430709. The reversal of 525430681 is 186034525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 524822281 + 608400 = 22909^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 525430681 - 2⁵ = 525430649 is a prime.

It is a super-2 number, since 2×525430681² = 552154801072247522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (535430681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262715340 + 262715341.

It is an arithmetic number, because the mean of its divisors is an integer number (262715341).

Almost surely, 2^525430681 is an apocalyptic number.

It is an amenable number.

525430681 is a deficient number, since it is larger than the sum of its proper divisors (1).

525430681 is an equidigital number, since it uses as much as digits as its factorization.

525430681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 525430681 is about 22922.2747780407. The cubic root of 525430681 is about 806.9348573416.

The spelling of 525430681 in words is "five hundred twenty-five million, four hundred thirty thousand, six hundred eighty-one".