25126987 has 8 divisors (see below), whose sum is σ = 26611200. Its totient is φ = 23658984.

The previous prime is 25126961. The next prime is 25126991. The reversal of 25126987 is 78962152.

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

It is a cyclic number.

It is not a de Polignac number, because 25126987 - 2⁷ = 25126859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25106987) 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, 787 + ... + 7132.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^25126987 is an apocalyptic number.

25126987 is a deficient number, since it is larger than the sum of its proper divisors (1484213).

25126987 is a wasteful number, since it uses less digits than its factorization.

25126987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8105.

The product of its digits is 60480, while the sum is 40.

The square root of 25126987 is about 5012.6826151274. The cubic root of 25126987 is about 292.8960209115.

The spelling of 25126987 in words is "twenty-five million, one hundred twenty-six thousand, nine hundred eighty-seven".