23025001555 has 4 divisors (see below), whose sum is σ = 27630001872. Its totient is φ = 18420001240.

The previous prime is 23025001507. The next prime is 23025001561. The reversal of 23025001555 is 55510052032.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23025001555 - 2⁷ = 23025001427 is a prime.

It is a super-3 number, since 3×23025001555³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2302500151 + ... + 2302500160.

It is an arithmetic number, because the mean of its divisors is an integer number (6907500468).

Almost surely, 2^23025001555 is an apocalyptic number.

23025001555 is a deficient number, since it is larger than the sum of its proper divisors (4605000317).

23025001555 is an equidigital number, since it uses as much as digits as its factorization.

23025001555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4605000316.

The product of its (nonzero) digits is 7500, while the sum is 28.

Adding to 23025001555 its reverse (55510052032), we get a palindrome (78535053587).

The spelling of 23025001555 in words is "twenty-three billion, twenty-five million, one thousand, five hundred fifty-five".