25687380 has 48 divisors (see below), whose sum is σ = 73463040. Its totient is φ = 6703488.

The previous prime is 25687367. The next prime is 25687393. The reversal of 25687380 is 8378652.

It is an interprime number because it is at equal distance from previous prime (25687367) and next prime (25687393).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1735 + ... + 7374.

It is an arithmetic number, because the mean of its divisors is an integer number (1530480).

Almost surely, 2^25687380 is an apocalyptic number.

25687380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25687380 is an abundant number, since it is smaller than the sum of its proper divisors (47775660).

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

25687380 is a wasteful number, since it uses less digits than its factorization.

25687380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9168 (or 9166 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 25687380 is about 5068.2718948375. The cubic root of 25687380 is about 295.0574627121.

The spelling of 25687380 in words is "twenty-five million, six hundred eighty-seven thousand, three hundred eighty".