25451250 has 80 divisors (see below), whose sum is σ = 69502752. Its totient is φ = 6160000.

The previous prime is 25451249. The next prime is 25451263. The reversal of 25451250 is 5215452.

It is a happy number.

It is a super-2 number, since 2×25451250² = 1295532253125000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25451250.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40942 + ... + 41558.

Almost surely, 2^25451250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25451250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34751376).

25451250 is an abundant number, since it is smaller than the sum of its proper divisors (44051502).

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

25451250 is a wasteful number, since it uses less digits than its factorization.

25451250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653 (or 638 counting only the distinct ones).

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

The square root of 25451250 is about 5044.9231906938. The cubic root of 25451250 is about 294.1505776854.

The spelling of 25451250 in words is "twenty-five million, four hundred fifty-one thousand, two hundred fifty".