25813039000 has 128 divisors (see below), whose sum is σ = 72665049600. Its totient is φ = 8384342400.

The previous prime is 25813038947. The next prime is 25813039009. The reversal of 25813039000 is 93031852.

It is a happy number.

It is a super-3 number, since 3×25813039000³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25813039009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35959 + ... + 230041.

It is an arithmetic number, because the mean of its divisors is an integer number (567695700).

Almost surely, 2^25813039000 is an apocalyptic number.

25813039000 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 25813039000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36332524800).

25813039000 is an abundant number, since it is smaller than the sum of its proper divisors (46852010600).

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

25813039000 is a wasteful number, since it uses less digits than its factorization.

25813039000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194130 (or 194116 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 25813039000 in words is "twenty-five billion, eight hundred thirteen million, thirty-nine thousand".