1025664158 has 4 divisors (see below), whose sum is σ = 1538496240. Its totient is φ = 512832078.

The previous prime is 1025664151. The next prime is 1025664163. The reversal of 1025664158 is 8514665201.

It is a happy number.

1025664158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025664151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256416038 + ... + 256416041.

It is an arithmetic number, because the mean of its divisors is an integer number (384624060).

Almost surely, 2^1025664158 is an apocalyptic number.

1025664158 is a deficient number, since it is larger than the sum of its proper divisors (512832082).

1025664158 is an equidigital number, since it uses as much as digits as its factorization.

1025664158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512832081.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 1025664158 is about 32025.9919128198. The cubic root of 1025664158 is about 1008.4825620238.

The spelling of 1025664158 in words is "one billion, twenty-five million, six hundred sixty-four thousand, one hundred fifty-eight".