525540649 has 2 divisors, whose sum is σ = 525540650. Its totient is φ = 525540648.

The previous prime is 525540629. The next prime is 525540661. The reversal of 525540649 is 946045525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 524730649 + 810000 = 22907^2 + 900^2 .

It is a cyclic number.

It is not a de Polignac number, because 525540649 - 2⁹ = 525540137 is a prime.

It is not a weakly prime, because it can be changed into another prime (525540619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262770324 + 262770325.

It is an arithmetic number, because the mean of its divisors is an integer number (262770325).

Almost surely, 2^525540649 is an apocalyptic number.

It is an amenable number.

525540649 is a deficient number, since it is larger than the sum of its proper divisors (1).

525540649 is an equidigital number, since it uses as much as digits as its factorization.

525540649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 525540649 is about 22924.6733673568. The cubic root of 525540649 is about 806.9911481939.

The spelling of 525540649 in words is "five hundred twenty-five million, five hundred forty thousand, six hundred forty-nine".