25140028 has 6 divisors (see below), whose sum is σ = 43995056. Its totient is φ = 12570012.

The previous prime is 25140007. The next prime is 25140043. The reversal of 25140028 is 82004152.

It is a junction number, because it is equal to n+sod(n) for n = 25139990 and 25140008.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3142500 + ... + 3142507.

Almost surely, 2^25140028 is an apocalyptic number.

It is an amenable number.

25140028 is a deficient number, since it is larger than the sum of its proper divisors (18855028).

25140028 is a wasteful number, since it uses less digits than its factorization.

25140028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6285011 (or 6285009 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 25140028 is about 5013.9832468807. The cubic root of 25140028 is about 292.9466835236.

The spelling of 25140028 in words is "twenty-five million, one hundred forty thousand, twenty-eight".