1025731049 has 8 divisors (see below), whose sum is σ = 1180132800. Its totient is φ = 873296496.

The previous prime is 1025731037. The next prime is 1025731123. The reversal of 1025731049 is 9401375201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1025731049 - 2²⁴ = 1008953833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1025731009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490679 + ... + 492764.

It is an arithmetic number, because the mean of its divisors is an integer number (147516600).

Almost surely, 2^1025731049 is an apocalyptic number.

It is an amenable number.

1025731049 is a deficient number, since it is larger than the sum of its proper divisors (154401751).

1025731049 is an equidigital number, since it uses as much as digits as its factorization.

1025731049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983599.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1025731049 is about 32027.0362194194. The cubic root of 1025731049 is about 1008.5044850351.

The spelling of 1025731049 in words is "one billion, twenty-five million, seven hundred thirty-one thousand, forty-nine".