25987974 has 16 divisors (see below), whose sum is σ = 52211712. Its totient is φ = 8623368.

The previous prime is 25987963. The next prime is 25987979. The reversal of 25987974 is 47978952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25987979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8374 + ... + 11049.

It is an arithmetic number, because the mean of its divisors is an integer number (3263232).

Almost surely, 2^25987974 is an apocalyptic number.

25987974 is an abundant number, since it is smaller than the sum of its proper divisors (26223738).

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

25987974 is a wasteful number, since it uses less digits than its factorization.

25987974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19651.

The product of its digits is 1270080, while the sum is 51.

The square root of 25987974 is about 5097.8401308790. The cubic root of 25987974 is about 296.2039241842.

The spelling of 25987974 in words is "twenty-five million, nine hundred eighty-seven thousand, nine hundred seventy-four".