25197603000 has 128 divisors (see below), whose sum is σ = 79612416000. Its totient is φ = 6634243200.

The previous prime is 25197602987. The next prime is 25197603001. The reversal of 25197603000 is 30679152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25197603001) 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, 183841 + ... + 290159.

It is an arithmetic number, because the mean of its divisors is an integer number (621972000).

Almost surely, 2^25197603000 is an apocalyptic number.

25197603000 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 25197603000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39806208000).

25197603000 is an abundant number, since it is smaller than the sum of its proper divisors (54414813000).

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

25197603000 is a wasteful number, since it uses less digits than its factorization.

25197603000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106422 (or 106408 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The spelling of 25197603000 in words is "twenty-five billion, one hundred ninety-seven million, six hundred three thousand".