25151228165 has 8 divisors (see below), whose sum is σ = 34493112960. Its totient is φ = 17246556432.

The previous prime is 25151228147. The next prime is 25151228189. The reversal of 25151228165 is 56182215152.

It is a happy number.

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

It is not a de Polignac number, because 25151228165 - 2²⁰ = 25150179589 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359303225 + ... + 359303294.

It is an arithmetic number, because the mean of its divisors is an integer number (4311639120).

Almost surely, 2^25151228165 is an apocalyptic number.

It is an amenable number.

25151228165 is a deficient number, since it is larger than the sum of its proper divisors (9341884795).

25151228165 is an equidigital number, since it uses as much as digits as its factorization.

25151228165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718606531.

The product of its digits is 48000, while the sum is 38.

The spelling of 25151228165 in words is "twenty-five billion, one hundred fifty-one million, two hundred twenty-eight thousand, one hundred sixty-five".