1025428245 has 16 divisors (see below), whose sum is σ = 1680702912. Its totient is φ = 533555840.

The previous prime is 1025428237. The next prime is 1025428277. The reversal of 1025428245 is 5428245201.

It is not a de Polignac number, because 1025428245 - 2³ = 1025428237 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 833067 + ... + 834296.

It is an arithmetic number, because the mean of its divisors is an integer number (105043932).

Almost surely, 2^1025428245 is an apocalyptic number.

1025428245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1025428245 is a deficient number, since it is larger than the sum of its proper divisors (655274667).

1025428245 is a wasteful number, since it uses less digits than its factorization.

1025428245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667412.

The product of its (nonzero) digits is 25600, while the sum is 33.

The square root of 1025428245 is about 32022.3085520079. The cubic root of 1025428245 is about 1008.4052357411.

The spelling of 1025428245 in words is "one billion, twenty-five million, four hundred twenty-eight thousand, two hundred forty-five".