1025664146 has 16 divisors (see below), whose sum is σ = 1665434904. Its totient is φ = 470928384.

The previous prime is 1025664131. The next prime is 1025664151. The reversal of 1025664146 is 6414665201.

It can be written as a sum of positive squares in 4 ways, for example, as 271887121 + 753777025 = 16489^2 + 27455^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97181 + ... + 107216.

Almost surely, 2^1025664146 is an apocalyptic number.

1025664146 is a deficient number, since it is larger than the sum of its proper divisors (639770758).

1025664146 is a wasteful number, since it uses less digits than its factorization.

1025664146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204605.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1025664146 is about 32025.9917254720. The cubic root of 1025664146 is about 1008.4825580908.

The spelling of 1025664146 in words is "one billion, twenty-five million, six hundred sixty-four thousand, one hundred forty-six".