25150000 has 60 divisors (see below), whose sum is σ = 61027344. Its totient is φ = 10040000.

The previous prime is 25149997. The next prime is 25150001. The reversal of 25150000 is 5152.

It is not an unprimeable number, because it can be changed into a prime (25150001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49749 + ... + 50251.

Almost surely, 2^25150000 is an apocalyptic number.

25150000 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 25150000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30513672).

25150000 is an abundant number, since it is smaller than the sum of its proper divisors (35877344).

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

25150000 is an frugal number, since it uses more digits than its factorization.

25150000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 25150000 is about 5014.9775672479. The cubic root of 25150000 is about 292.9854116450.

Adding to 25150000 its reverse (5152), we get a palindrome (25155152).

The spelling of 25150000 in words is "twenty-five million, one hundred fifty thousand".