1025251559 has 2 divisors, whose sum is σ = 1025251560. Its totient is φ = 1025251558.

The previous prime is 1025251541. The next prime is 1025251603. The reversal of 1025251559 is 9551525201.

It is a weak prime.

It is an emirp because it is prime and its reverse (9551525201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025251559 is a prime.

It is a super-2 number, since 2×1025251559² = 2102281518463860962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025251459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512625779 + 512625780.

It is an arithmetic number, because the mean of its divisors is an integer number (512625780).

Almost surely, 2^1025251559 is an apocalyptic number.

1025251559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025251559 is an equidigital number, since it uses as much as digits as its factorization.

1025251559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 1025251559 is about 32019.5496376823. The cubic root of 1025251559 is about 1008.3473147952.

The spelling of 1025251559 in words is "one billion, twenty-five million, two hundred fifty-one thousand, five hundred fifty-nine".