25428770 has 32 divisors (see below), whose sum is σ = 48977136. Its totient is φ = 9472000.

The previous prime is 25428769. The next prime is 25428779. The reversal of 25428770 is 7782452.

It can be written as a sum of positive squares in 8 ways, for example, as 20584369 + 4844401 = 4537^2 + 2201^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25428770.

It is not an unprimeable number, because it can be changed into a prime (25428779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16430 + ... + 17910.

Almost surely, 2^25428770 is an apocalyptic number.

25428770 is a deficient number, since it is larger than the sum of its proper divisors (23548366).

25428770 is a wasteful number, since it uses less digits than its factorization.

25428770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 25428770 is about 5042.6947161215. The cubic root of 25428770 is about 294.0639486358.

The spelling of 25428770 in words is "twenty-five million, four hundred twenty-eight thousand, seven hundred seventy".