25773733764 has 81 divisors (see below), whose sum is σ = 67720949751. Its totient is φ = 8582575320.

The previous prime is 25773733747. The next prime is 25773733781. The reversal of 25773733764 is 46733737752.

The square root of 25773733764 is 160542.

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

25773733764 is a `hidden beast` number, since 2 + 577 + 3 + 7 + 3 + 3 + 7 + 64 = 666.

It is an interprime number because it is at equal distance from previous prime (25773733747) and next prime (25773733781).

It is a tau number, because it is divible by the number of its divisors (81).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 25773733764.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 26007309 + ... + 26008299.

Almost surely, 2^25773733764 is an apocalyptic number.

25773733764 is the 160542-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25773733764

25773733764 is an abundant number, since it is smaller than the sum of its proper divisors (41947215987).

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

25773733764 is an frugal number, since it uses more digits than its factorization.

25773733764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010 (or 996 counting only the distinct ones).

The product of its digits is 15558480, while the sum is 54.

The spelling of 25773733764 in words is "twenty-five billion, seven hundred seventy-three million, seven hundred thirty-three thousand, seven hundred sixty-four".