25926987 has 4 divisors (see below), whose sum is σ = 34569320. Its totient is φ = 17284656.

The previous prime is 25926961. The next prime is 25926997. The reversal of 25926987 is 78962952.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25926987 - 2⁸ = 25926731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25926907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4321162 + ... + 4321167.

It is an arithmetic number, because the mean of its divisors is an integer number (8642330).

Almost surely, 2^25926987 is an apocalyptic number.

25926987 is a deficient number, since it is larger than the sum of its proper divisors (8642333).

25926987 is an equidigital number, since it uses as much as digits as its factorization.

25926987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8642332.

The product of its digits is 544320, while the sum is 48.

The square root of 25926987 is about 5091.8549665127. The cubic root of 25926987 is about 295.9720382340.

The spelling of 25926987 in words is "twenty-five million, nine hundred twenty-six thousand, nine hundred eighty-seven".