1625064992 has 12 divisors (see below), whose sum is σ = 3199346766. Its totient is φ = 812532480.

The previous prime is 1625064979. The next prime is 1625065007. The reversal of 1625064992 is 2994605261.

It can be written as a sum of positive squares in only one way, i.e., 1281926416 + 343138576 = 35804^2 + 18524^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25391609 + ... + 25391672.

Almost surely, 2^1625064992 is an apocalyptic number.

It is an amenable number.

1625064992 is a deficient number, since it is larger than the sum of its proper divisors (1574281774).

1625064992 is an equidigital number, since it uses as much as digits as its factorization.

1625064992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50783291 (or 50783283 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 1625064992 is about 40312.0948599797. The cubic root of 1625064992 is about 1175.6830172867.

The spelling of 1625064992 in words is "one billion, six hundred twenty-five million, sixty-four thousand, nine hundred ninety-two".