1025459641 has 2 divisors, whose sum is σ = 1025459642. Its totient is φ = 1025459640.

The previous prime is 1025459639. The next prime is 1025459671. The reversal of 1025459641 is 1469545201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 608115600 + 417344041 = 24660^2 + 20429^2 .

It is an emirp because it is prime and its reverse (1469545201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1025459641 - 2¹ = 1025459639 is a prime.

Together with 1025459639, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1025459641.

It is not a weakly prime, because it can be changed into another prime (1025459671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512729820 + 512729821.

It is an arithmetic number, because the mean of its divisors is an integer number (512729821).

Almost surely, 2^1025459641 is an apocalyptic number.

It is an amenable number.

1025459641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025459641 is an equidigital number, since it uses as much as digits as its factorization.

1025459641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1025459641 is about 32022.7987690021. The cubic root of 1025459641 is about 1008.4155272357.

The spelling of 1025459641 in words is "one billion, twenty-five million, four hundred fifty-nine thousand, six hundred forty-one".