25416721152 has 108 divisors (see below), whose sum is σ = 73955721840. Its totient is φ = 8394430464.

The previous prime is 25416721123. The next prime is 25416721153. The reversal of 25416721152 is 25112761452.

25416721152 is a `hidden beast` number, since 2 + 541 + 67 + 2 + 1 + 1 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25416721153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200533 + ... + 301739.

Almost surely, 2^25416721152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25416721152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36977860920).

25416721152 is an abundant number, since it is smaller than the sum of its proper divisors (48539000688).

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

25416721152 is a wasteful number, since it uses less digits than its factorization.

25416721152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101338 (or 101321 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The spelling of 25416721152 in words is "twenty-five billion, four hundred sixteen million, seven hundred twenty-one thousand, one hundred fifty-two".