25220511623 has 8 divisors (see below), whose sum is σ = 25268100000. Its totient is φ = 25172961408.

The previous prime is 25220511607. The next prime is 25220511629. The reversal of 25220511623 is 32611502252.

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 25220511623 - 2⁴ = 25220511607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25220511629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1544003 + ... + 1560251.

It is an arithmetic number, because the mean of its divisors is an integer number (3158512500).

Almost surely, 2^25220511623 is an apocalyptic number.

25220511623 is a deficient number, since it is larger than the sum of its proper divisors (47588377).

25220511623 is a wasteful number, since it uses less digits than its factorization.

25220511623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19081.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 25220511623 in words is "twenty-five billion, two hundred twenty million, five hundred eleven thousand, six hundred twenty-three".