25857102 has 16 divisors (see below), whose sum is σ = 54756432. Its totient is φ = 8112000.

The previous prime is 25857079. The next prime is 25857103. The reversal of 25857102 is 20175852.

It is a self number, because there is not a number n which added to its sum of digits gives 25857102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25857103) 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, 126649 + ... + 126852.

It is an arithmetic number, because the mean of its divisors is an integer number (3422277).

Almost surely, 2^25857102 is an apocalyptic number.

25857102 is an abundant number, since it is smaller than the sum of its proper divisors (28899330).

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

25857102 is a wasteful number, since it uses less digits than its factorization.

25857102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253523.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 25857102 is about 5084.9879055903. The cubic root of 25857102 is about 295.7058726098.

The spelling of 25857102 in words is "twenty-five million, eight hundred fifty-seven thousand, one hundred two".