25345913616 has 45 divisors (see below), whose sum is σ = 70938702471. Its totient is φ = 8448001056.

The previous prime is 25345913611. The next prime is 25345913651. The reversal of 25345913616 is 61631954352.

The square root of 25345913616 is 159204.

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

25345913616 is a `hidden beast` number, since 2 + 53 + 4 + 591 + 3 + 6 + 1 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (25345913611) 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, 1903815 + ... + 1917081.

Almost surely, 2^25345913616 is an apocalyptic number.

25345913616 is the 159204-th square number.

It is an amenable number.

25345913616 is an abundant number, since it is smaller than the sum of its proper divisors (45592788855).

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

25345913616 is an frugal number, since it uses more digits than its factorization.

25345913616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26548 (or 13272 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

It can be divided in two parts, 25345 and 913616, that added together give a square (938961 = 969²).

The spelling of 25345913616 in words is "twenty-five billion, three hundred forty-five million, nine hundred thirteen thousand, six hundred sixteen".