25144305452 has 12 divisors (see below), whose sum is σ = 50288610960. Its totient is φ = 10776130896.

The previous prime is 25144305449. The next prime is 25144305491. The reversal of 25144305452 is 25450344152.

25144305452 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449005427 + ... + 449005482.

It is an arithmetic number, because the mean of its divisors is an integer number (4190717580).

Almost surely, 2^25144305452 is an apocalyptic number.

It is an amenable number.

25144305452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25144305452 is a wasteful number, since it uses less digits than its factorization.

25144305452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898010920 (or 898010918 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 25144305452 in words is "twenty-five billion, one hundred forty-four million, three hundred five thousand, four hundred fifty-two".