1464644550625 has 15 divisors (see below), whose sum is σ = 1830257638671. Its totient is φ = 1171691436000.

The previous prime is 1464644550623. The next prime is 1464644550637. The reversal of 1464644550625 is 5260554464641.

The square root of 1464644550625 is 1210225.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 137208753889 + 1327435796736 = 370417^2 + 1152144^2 .

It is not a de Polignac number, because 1464644550625 - 2¹ = 1464644550623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1464644550623) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 30231421 + ... + 30279829.

Almost surely, 2^{1464644550625} is an apocalyptic number.

1464644550625 is the 1210225-th square number.

1464644550625 is the 605113-rd centered octagonal number.

It is an amenable number.

1464644550625 is a deficient number, since it is larger than the sum of its proper divisors (365613088046).

1464644550625 is an frugal number, since it uses more digits than its factorization.

1464644550625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96838 (or 48414 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 52.

The spelling of 1464644550625 in words is "one trillion, four hundred sixty-four billion, six hundred forty-four million, five hundred fifty thousand, six hundred twenty-five".