25377764416 has 21 divisors (see below), whose sum is σ = 50361530341. Its totient is φ = 12688244992.

The previous prime is 25377764393. The next prime is 25377764431. The reversal of 25377764416 is 61446777352.

The square root of 25377764416 is 159304.

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., 570254400 + 24807510016 = 23880^2 + 157504^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1264476 + ... + 1284388.

Almost surely, 2^25377764416 is an apocalyptic number.

25377764416 is the 159304-th square number.

It is an amenable number.

25377764416 is a deficient number, since it is larger than the sum of its proper divisors (24983765925).

25377764416 is an frugal number, since it uses more digits than its factorization.

25377764416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39838 (or 19915 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 52.

The spelling of 25377764416 in words is "twenty-five billion, three hundred seventy-seven million, seven hundred sixty-four thousand, four hundred sixteen".