25120987 has 8 divisors (see below), whose sum is σ = 26334000. Its totient is φ = 23936640.

The previous prime is 25120957. The next prime is 25120999. The reversal of 25120987 is 78902152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25120987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25120937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5362 + ... + 8887.

It is an arithmetic number, because the mean of its divisors is an integer number (3291750).

Almost surely, 2^25120987 is an apocalyptic number.

25120987 is a deficient number, since it is larger than the sum of its proper divisors (1213013).

25120987 is a wasteful number, since it uses less digits than its factorization.

25120987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14333.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 25120987 is about 5012.0840974589. The cubic root of 25120987 is about 292.8727057932.

The spelling of 25120987 in words is "twenty-five million, one hundred twenty thousand, nine hundred eighty-seven".