1025502539 has 2 divisors, whose sum is σ = 1025502540. Its totient is φ = 1025502538.

The previous prime is 1025502481. The next prime is 1025502559. The reversal of 1025502539 is 9352055201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025502539 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1025502559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512751269 + 512751270.

It is an arithmetic number, because the mean of its divisors is an integer number (512751270).

Almost surely, 2^1025502539 is an apocalyptic number.

1025502539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025502539 is an equidigital number, since it uses as much as digits as its factorization.

1025502539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 1025502539 is about 32023.4685660376. The cubic root of 1025502539 is about 1008.4295887045.

The spelling of 1025502539 in words is "one billion, twenty-five million, five hundred two thousand, five hundred thirty-nine".