25193533107856 has 45 divisors (see below), whose sum is σ = 48935429624419. Its totient is φ = 12565114747232.

The previous prime is 25193533107817. The next prime is 25193533107857. The reversal of 25193533107856 is 65870133539152.

It is a happy number.

The square root of 25193533107856 is 5019316.

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

It is a super-2 number, since 2×25193533107856² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25193533107856.

It is not an unprimeable number, because it can be changed into a prime (25193533107857) 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, 9376080945 + ... + 9376083631.

Almost surely, 2^{25193533107856} is an apocalyptic number.

25193533107856 is the 5019316-th square number.

It is an amenable number.

25193533107856 is a deficient number, since it is larger than the sum of its proper divisors (23741896516563).

25193533107856 is an frugal number, since it uses more digits than its factorization.

25193533107856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6316 (or 3156 counting only the distinct ones).

The product of its (nonzero) digits is 20412000, while the sum is 58.

The spelling of 25193533107856 in words is "twenty-five trillion, one hundred ninety-three billion, five hundred thirty-three million, one hundred seven thousand, eight hundred fifty-six".