25121153120 has 192 divisors, whose sum is σ = 69417492480. Its totient is φ = 8413396992.

The previous prime is 25121153117. The next prime is 25121153137. The reversal of 25121153120 is 2135112152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8581097 + ... + 8584023.

It is an arithmetic number, because the mean of its divisors is an integer number (361549440).

Almost surely, 2^25121153120 is an apocalyptic number.

25121153120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25121153120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34708746240).

25121153120 is an abundant number, since it is smaller than the sum of its proper divisors (44296339360).

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

25121153120 is a wasteful number, since it uses less digits than its factorization.

25121153120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125 (or 3117 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 25121153120 its reverse (2135112152), we get a palindrome (27256265272).

The spelling of 25121153120 in words is "twenty-five billion, one hundred twenty-one million, one hundred fifty-three thousand, one hundred twenty".