25265878 has 16 divisors (see below), whose sum is σ = 41446080. Its totient is φ = 11456200.

The previous prime is 25265869. The next prime is 25265887. The reversal of 25265878 is 87856252.

It is an interprime number because it is at equal distance from previous prime (25265869) and next prime (25265887).

It is a super-2 number, since 2×25265878² = 1276729182221768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 9633 + ... + 11971.

It is an arithmetic number, because the mean of its divisors is an integer number (2590380).

Almost surely, 2^25265878 is an apocalyptic number.

25265878 is a deficient number, since it is larger than the sum of its proper divisors (16180202).

25265878 is a wasteful number, since it uses less digits than its factorization.

25265878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843.

The product of its digits is 268800, while the sum is 43.

The square root of 25265878 is about 5026.5174823132. The cubic root of 25265878 is about 293.4346966611.

The spelling of 25265878 in words is "twenty-five million, two hundred sixty-five thousand, eight hundred seventy-eight".