25223173642 has 8 divisors (see below), whose sum is σ = 37835446500. Its totient is φ = 12611358144.

The previous prime is 25223173621. The next prime is 25223173663. The reversal of 25223173642 is 24637132252.

25223173642 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (25223173621) and next prime (25223173663).

It can be written as a sum of positive squares in 2 ways, for example, as 24323833521 + 899340121 = 155961^2 + 29989^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 117784 + ... + 253612.

Almost surely, 2^25223173642 is an apocalyptic number.

25223173642 is a deficient number, since it is larger than the sum of its proper divisors (12612272858).

25223173642 is a wasteful number, since it uses less digits than its factorization.

25223173642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228680.

The product of its digits is 120960, while the sum is 37.

The spelling of 25223173642 in words is "twenty-five billion, two hundred twenty-three million, one hundred seventy-three thousand, six hundred forty-two".