25250280 has 192 divisors, whose sum is σ = 87333120. Its totient is φ = 5829120.

The previous prime is 25250261. The next prime is 25250299. The reversal of 25250280 is 8205252.

It is an interprime number because it is at equal distance from previous prime (25250261) and next prime (25250299).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 25250280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 537217 + ... + 537263.

It is an arithmetic number, because the mean of its divisors is an integer number (454860).

Almost surely, 2^25250280 is an apocalyptic number.

25250280 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 25250280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43666560).

25250280 is an abundant number, since it is smaller than the sum of its proper divisors (62082840).

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

25250280 is a wasteful number, since it uses less digits than its factorization.

25250280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 25250280 is about 5024.9656715245. The cubic root of 25250280 is about 293.3742998340.

The spelling of 25250280 in words is "twenty-five million, two hundred fifty thousand, two hundred eighty".