25155039630400 has 63 divisors (see below), whose sum is σ = 61897613043109. Its totient is φ = 10061935604480.

The previous prime is 25155039630377. The next prime is 25155039630403. The reversal of 25155039630400 is 403693055152.

The square root of 25155039630400 is 5015480.

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., 9055814266944 + 16099225363456 = 3009288^2 + 4012384^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25155039630403) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 200556507 + ... + 200681893.

Almost surely, 2^{25155039630400} is an apocalyptic number.

25155039630400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

25155039630400 is the 5015480-th square number.

It is an amenable number.

25155039630400 is an abundant number, since it is smaller than the sum of its proper divisors (36742573412709).

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

25155039630400 is an frugal number, since it uses more digits than its factorization.

25155039630400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250796 (or 125394 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 25155039630400 in words is "twenty-five trillion, one hundred fifty-five billion, thirty-nine million, six hundred thirty thousand, four hundred".