25149743712 has 144 divisors (see below), whose sum is σ = 72235800000. Its totient is φ = 8299660032.

The previous prime is 25149743687. The next prime is 25149743719. The reversal of 25149743712 is 21734794152.

25149743712 is a `hidden beast` number, since 2 + 51 + 497 + 43 + 71 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25149743719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19975339 + ... + 19976597.

It is an arithmetic number, because the mean of its divisors is an integer number (501637500).

Almost surely, 2^25149743712 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 25149743712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36117900000).

25149743712 is an abundant number, since it is smaller than the sum of its proper divisors (47086056288).

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

25149743712 is a wasteful number, since it uses less digits than its factorization.

25149743712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913 (or 1902 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The spelling of 25149743712 in words is "twenty-five billion, one hundred forty-nine million, seven hundred forty-three thousand, seven hundred twelve".