25513123152 has 160 divisors (see below), whose sum is σ = 75371175936. Its totient is φ = 7361164800.

The previous prime is 25513123147. The next prime is 25513123213. The reversal of 25513123152 is 25132131552.

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, 2703402 + ... + 2712822.

Almost surely, 2^25513123152 is an apocalyptic number.

25513123152 is a gapful number since it is divisible by the number (22) 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 25513123152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37685587968).

25513123152 is an abundant number, since it is smaller than the sum of its proper divisors (49858052784).

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

25513123152 is a wasteful number, since it uses less digits than its factorization.

25513123152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9689 (or 9683 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The spelling of 25513123152 in words is "twenty-five billion, five hundred thirteen million, one hundred twenty-three thousand, one hundred fifty-two".