25113521144 has 16 divisors (see below), whose sum is σ = 47142810000. Its totient is φ = 12542105152.

The previous prime is 25113521143. The next prime is 25113521161. The reversal of 25113521144 is 44112531152.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25113521143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1824644 + ... + 1838355.

It is an arithmetic number, because the mean of its divisors is an integer number (2946425625).

Almost surely, 2^25113521144 is an apocalyptic number.

It is an amenable number.

25113521144 is a deficient number, since it is larger than the sum of its proper divisors (22029288856).

25113521144 is a wasteful number, since it uses less digits than its factorization.

25113521144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663862 (or 3663858 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The spelling of 25113521144 in words is "twenty-five billion, one hundred thirteen million, five hundred twenty-one thousand, one hundred forty-four".