25070280 has 64 divisors (see below), whose sum is σ = 76507200. Its totient is φ = 6570240.

The previous prime is 25070237. The next prime is 25070281. The reversal of 25070280 is 8207052.

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 25070280.

It is not an unprimeable number, because it can be changed into a prime (25070281) 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 15 ways as a sum of consecutive naturals, for example, 5310 + ... + 8850.

It is an arithmetic number, because the mean of its divisors is an integer number (1195425).

Almost surely, 2^25070280 is an apocalyptic number.

25070280 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 25070280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38253600).

25070280 is an abundant number, since it is smaller than the sum of its proper divisors (51436920).

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

25070280 is a wasteful number, since it uses less digits than its factorization.

25070280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614 (or 3610 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 25070280 is about 5007.0230676521. The cubic root of 25070280 is about 292.6755174208.

The spelling of 25070280 in words is "twenty-five million, seventy thousand, two hundred eighty".