16270278025 has 27 divisors (see below), whose sum is σ = 20463085461. Its totient is φ = 12833053440.

The previous prime is 16270278019. The next prime is 16270278029. The reversal of 16270278025 is 52087207261.

It is a happy number.

The square root of 16270278025 is 127555.

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 598242681 + 15672035344 = 24459^2 + 125188^2 .

It is not a de Polignac number, because 16270278025 - 2¹³ = 16270269833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16270278029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 61864044 + ... + 61864306.

Almost surely, 2^16270278025 is an apocalyptic number.

16270278025 is the 127555-th square number.

16270278025 is the 63778-th centered octagonal number.

It is an amenable number.

16270278025 is a deficient number, since it is larger than the sum of its proper divisors (4192807436).

16270278025 is an frugal number, since it uses more digits than its factorization.

16270278025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 16270278025 in words is "sixteen billion, two hundred seventy million, two hundred seventy-eight thousand, twenty-five".