25129140 has 24 divisors (see below), whose sum is σ = 70361760. Its totient is φ = 6701088.

The previous prime is 25129129. The next prime is 25129151. The reversal of 25129140 is 4192152.

It is an interprime number because it is at equal distance from previous prime (25129129) and next prime (25129151).

It is a self number, because there is not a number n which added to its sum of digits gives 25129140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209350 + ... + 209469.

It is an arithmetic number, because the mean of its divisors is an integer number (2931740).

Almost surely, 2^25129140 is an apocalyptic number.

25129140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25129140 is an abundant number, since it is smaller than the sum of its proper divisors (45232620).

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

25129140 is a wasteful number, since it uses less digits than its factorization.

25129140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418831 (or 418829 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 25129140 is about 5012.8973657956. The cubic root of 25129140 is about 292.9043862482.

The spelling of 25129140 in words is "twenty-five million, one hundred twenty-nine thousand, one hundred forty".