25857130 has 16 divisors (see below), whose sum is σ = 50123304. Its totient is φ = 9547200.

The previous prime is 25857103. The next prime is 25857133. The reversal of 25857130 is 3175852.

It can be written as a sum of positive squares in 4 ways, for example, as 11042329 + 14814801 = 3323^2 + 3849^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25857092 and 25857101.

It is not an unprimeable number, because it can be changed into a prime (25857133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99321 + ... + 99580.

Almost surely, 2^25857130 is an apocalyptic number.

25857130 is a deficient number, since it is larger than the sum of its proper divisors (24266174).

25857130 is a wasteful number, since it uses less digits than its factorization.

25857130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198921.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 25857130 is about 5084.9906587918. The cubic root of 25857130 is about 295.7059793472.

The spelling of 25857130 in words is "twenty-five million, eight hundred fifty-seven thousand, one hundred thirty".