25445992324 has 27 divisors (see below), whose sum is σ = 45524929093. Its totient is φ = 12444956288.

The previous prime is 25445992303. The next prime is 25445992357. The reversal of 25445992324 is 42329954452.

The square root of 25445992324 is 159518.

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

It can be written as a sum of positive squares in only one way, i.e., 24495380100 + 950612224 = 156510^2 + 30832^2 .

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 14993844 + ... + 14995540.

Almost surely, 2^25445992324 is an apocalyptic number.

25445992324 is the 159518-th square number.

It is an amenable number.

25445992324 is a deficient number, since it is larger than the sum of its proper divisors (20078936769).

25445992324 is an frugal number, since it uses more digits than its factorization.

25445992324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3492 (or 1746 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 49.

Multiplying 25445992324 by its sum of digits (49), we get a square (1246853623876 = 1116626²).

The spelling of 25445992324 in words is "twenty-five billion, four hundred forty-five million, nine hundred ninety-two thousand, three hundred twenty-four".