25655138 has 8 divisors (see below), whose sum is σ = 39301632. Its totient is φ = 12554596.

The previous prime is 25655117. The next prime is 25655167. The reversal of 25655138 is 83155652.

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

It is a super-2 number, since 2×25655138² = 1316372211598088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25655098 and 25655107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136370 + ... + 136557.

It is an arithmetic number, because the mean of its divisors is an integer number (4912704).

Almost surely, 2^25655138 is an apocalyptic number.

25655138 is a deficient number, since it is larger than the sum of its proper divisors (13646494).

25655138 is a wasteful number, since it uses less digits than its factorization.

25655138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272976.

The product of its digits is 36000, while the sum is 35.

The square root of 25655138 is about 5065.0901275298. The cubic root of 25655138 is about 294.9339620446.

The spelling of 25655138 in words is "twenty-five million, six hundred fifty-five thousand, one hundred thirty-eight".