25140155 has 8 divisors (see below), whose sum is σ = 30322512. Its totient is φ = 20009248.

The previous prime is 25140149. The next prime is 25140197. The reversal of 25140155 is 55104152.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25140155 - 2⁴ = 25140139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25140155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11777 + ... + 13746.

It is an arithmetic number, because the mean of its divisors is an integer number (3790314).

Almost surely, 2^25140155 is an apocalyptic number.

25140155 is a deficient number, since it is larger than the sum of its proper divisors (5182357).

25140155 is a wasteful number, since it uses less digits than its factorization.

25140155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25725.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 25140155 is about 5013.9959114463. The cubic root of 25140155 is about 292.9471768162.

The spelling of 25140155 in words is "twenty-five million, one hundred forty thousand, one hundred fifty-five".