25430149000 has 128 divisors (see below), whose sum is σ = 60949324800. Its totient is φ = 9926726400.

The previous prime is 25430148977. The next prime is 25430149001. The reversal of 25430149000 is 94103452.

It is a self number, because there is not a number n which added to its sum of digits gives 25430149000.

It is not an unprimeable number, because it can be changed into a prime (25430149001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23922469 + ... + 23923531.

It is an arithmetic number, because the mean of its divisors is an integer number (476166600).

Almost surely, 2^25430149000 is an apocalyptic number.

25430149000 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 25430149000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30474662400).

25430149000 is an abundant number, since it is smaller than the sum of its proper divisors (35519175800).

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

25430149000 is a wasteful number, since it uses less digits than its factorization.

25430149000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1626 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 25430149000 in words is "twenty-five billion, four hundred thirty million, one hundred forty-nine thousand".