25031002000 has 160 divisors (see below), whose sum is σ = 62987932800. Its totient is φ = 9609152000.

The previous prime is 25031001997. The next prime is 25031002001. The reversal of 25031002000 is 20013052.

It is a super-2 number, since 2×25031002000² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25031002001) 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, 10380795 + ... + 10383205.

It is an arithmetic number, because the mean of its divisors is an integer number (393674580).

Almost surely, 2^25031002000 is an apocalyptic number.

25031002000 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 25031002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31493966400).

25031002000 is an abundant number, since it is smaller than the sum of its proper divisors (37956930800).

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

25031002000 is a wasteful number, since it uses less digits than its factorization.

25031002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642 (or 2626 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

Adding to 25031002000 its reverse (20013052), we get a palindrome (25051015052).

The spelling of 25031002000 in words is "twenty-five billion, thirty-one million, two thousand".