1025363844 has 72 divisors (see below), whose sum is σ = 2653891968. Its totient is φ = 333650880.

The previous prime is 1025363821. The next prime is 1025363849. The reversal of 1025363844 is 4483635201.

1025363844 is a `hidden beast` number, since 10 + 2 + 5 + 3 + 638 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1025363799 and 1025363808.

It is not an unprimeable number, because it can be changed into a prime (1025363849) 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 23 ways as a sum of consecutive naturals, for example, 1168734 + ... + 1169610.

Almost surely, 2^1025363844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025363844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1326945984).

1025363844 is an abundant number, since it is smaller than the sum of its proper divisors (1628528124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025363844 is a wasteful number, since it uses less digits than its factorization.

1025363844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625 (or 1620 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 1025363844 is about 32021.3029716156. The cubic root of 1025363844 is about 1008.3841246702.

The spelling of 1025363844 in words is "one billion, twenty-five million, three hundred sixty-three thousand, eight hundred forty-four".