25878738 has 16 divisors (see below), whose sum is σ = 53427456. Its totient is φ = 8347920.

The previous prime is 25878737. The next prime is 25878739. The reversal of 25878738 is 83787852.

It is an interprime number because it is at equal distance from previous prime (25878737) and next prime (25878739).

It is not an unprimeable number, because it can be changed into a prime (25878737) 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, 69381 + ... + 69752.

It is an arithmetic number, because the mean of its divisors is an integer number (3339216).

Almost surely, 2^25878738 is an apocalyptic number.

25878738 is an abundant number, since it is smaller than the sum of its proper divisors (27548718).

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

25878738 is a wasteful number, since it uses less digits than its factorization.

25878738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139169.

The product of its digits is 752640, while the sum is 48.

The square root of 25878738 is about 5087.1148994297. The cubic root of 25878738 is about 295.7883271788.

It can be divided in two parts, 2587 and 8738, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 25878738 in words is "twenty-five million, eight hundred seventy-eight thousand, seven hundred thirty-eight".