25774764020 has 18 divisors (see below), whose sum is σ = 54128512242. Its totient is φ = 10309618416.

The previous prime is 25774764019. The next prime is 25774764061. The reversal of 25774764020 is 2046747752.

It can be written as a sum of positive squares in only one way, i.e., 20619811216 + 5154952804 = 143596^2 + 71798^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 700031 + ... + 735929.

It is an arithmetic number, because the mean of its divisors is an integer number (3007139569).

Almost surely, 2^25774764020 is an apocalyptic number.

25774764020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25774764020 is an abundant number, since it is smaller than the sum of its proper divisors (28353748222).

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

25774764020 is an frugal number, since it uses more digits than its factorization.

25774764020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71807 (or 35906 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 44.

The spelling of 25774764020 in words is "twenty-five billion, seven hundred seventy-four million, seven hundred sixty-four thousand, twenty".