7025640064 has 32 divisors (see below), whose sum is σ = 14153678100. Its totient is φ = 3473344512.

The previous prime is 7025640043. The next prime is 7025640073. The reversal of 7025640064 is 4600465207.

It can be written as a sum of positive squares in 2 ways, for example, as 6625960000 + 399680064 = 81400^2 + 19992^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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 in 3 ways as a sum of consecutive naturals, for example, 296967 + ... + 319750.

Almost surely, 2^7025640064 is an apocalyptic number.

It is an amenable number.

7025640064 is an abundant number, since it is smaller than the sum of its proper divisors (7128038036).

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

7025640064 is an equidigital number, since it uses as much as digits as its factorization.

7025640064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616820 (or 616808 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 7025640064 is about 83819.0912859356. The cubic root of 7025640064 is about 1915.2639406052.

The spelling of 7025640064 in words is "seven billion, twenty-five million, six hundred forty thousand, sixty-four".