18252025997 has 8 divisors (see below), whose sum is σ = 18601511544. Its totient is φ = 17902729728.

The previous prime is 18252025951. The next prime is 18252026011. The reversal of 18252025997 is 79952025281.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3798601 + 18248227396 = 1949^2 + 135086^2 .

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 18252025997 - 2³⁰ = 17178284173 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 (18252025907) 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, 155633 + ... + 246425.

It is an arithmetic number, because the mean of its divisors is an integer number (2325188943).

Almost surely, 2^18252025997 is an apocalyptic number.

It is an amenable number.

18252025997 is a deficient number, since it is larger than the sum of its proper divisors (349485547).

18252025997 is an equidigital number, since it uses as much as digits as its factorization.

18252025997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94639.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 18252025997 in words is "eighteen billion, two hundred fifty-two million, twenty-five thousand, nine hundred ninety-seven".