25286128 has 20 divisors (see below), whose sum is σ = 55990960. Its totient is φ = 10836864.

The previous prime is 25286117. The next prime is 25286137. The reversal of 25286128 is 82168252.

It is a junction number, because it is equal to n+sod(n) for n = 25286093 and 25286102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112773 + ... + 112996.

It is an arithmetic number, because the mean of its divisors is an integer number (2799548).

Almost surely, 2^25286128 is an apocalyptic number.

25286128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25286128 is an abundant number, since it is smaller than the sum of its proper divisors (30704832).

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

25286128 is a wasteful number, since it uses less digits than its factorization.

25286128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225784 (or 225778 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 25286128 is about 5028.5313959445. The cubic root of 25286128 is about 293.5130693692.

The spelling of 25286128 in words is "twenty-five million, two hundred eighty-six thousand, one hundred twenty-eight".