18962667025 has 9 divisors (see below), whose sum is σ = 23514560913. Its totient is φ = 15169582800.

The previous prime is 18962667019. The next prime is 18962667029. The reversal of 18962667025 is 52076626981.

The square root of 18962667025 is 137705.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1077349329 + 17885317696 = 32823^2 + 133736^2 .

It is not a de Polignac number, because 18962667025 - 2¹³ = 18962658833 is a prime.

It is a super-3 number, since 3×18962667025³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18962667029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 674755 + ... + 702295.

Almost surely, 2^18962667025 is an apocalyptic number.

18962667025 is the 137705-th square number.

18962667025 is the 68853-rd centered octagonal number.

It is an amenable number.

18962667025 is a deficient number, since it is larger than the sum of its proper divisors (4551893888).

18962667025 is an frugal number, since it uses more digits than its factorization.

18962667025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55092 (or 27546 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 18962667025 in words is "eighteen billion, nine hundred sixty-two million, six hundred sixty-seven thousand, twenty-five".