25050000 has 120 divisors (see below), whose sum is σ = 81369792. Its totient is φ = 6640000.

The previous prime is 25049977. The next prime is 25050001. The reversal of 25050000 is 5052.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (25050001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149917 + ... + 150083.

Almost surely, 2^25050000 is an apocalyptic number.

25050000 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 25050000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40684896).

25050000 is an abundant number, since it is smaller than the sum of its proper divisors (56319792).

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

25050000 is an equidigital number, since it uses as much as digits as its factorization.

25050000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 12.

The square root of 25050000 is about 5004.9975024969. The cubic root of 25050000 is about 292.5965785250.

Adding to 25050000 its reverse (5052), we get a palindrome (25055052).

The spelling of 25050000 in words is "twenty-five million, fifty thousand".