25415250 has 128 divisors (see below), whose sum is σ = 74760192. Its totient is φ = 5630400.

The previous prime is 25415239. The next prime is 25415251. The reversal of 25415250 is 5251452.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25415250.

It is not an unprimeable number, because it can be changed into a prime (25415251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 246699 + ... + 246801.

It is an arithmetic number, because the mean of its divisors is an integer number (584064).

Almost surely, 2^25415250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25415250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37380096).

25415250 is an abundant number, since it is smaller than the sum of its proper divisors (49344942).

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

25415250 is a wasteful number, since it uses less digits than its factorization.

25415250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 25415250 is about 5041.3539847942. The cubic root of 25415250 is about 294.0118233016.

The spelling of 25415250 in words is "twenty-five million, four hundred fifteen thousand, two hundred fifty".