65401025 has 6 divisors (see below), whose sum is σ = 81097302. Its totient is φ = 52320800.

The previous prime is 65401009. The next prime is 65401031. The reversal of 65401025 is 52010456.

It can be written as a sum of positive squares in 3 ways, for example, as 4545424 + 60855601 = 2132^2 + 7801^2 .

It is not a de Polignac number, because 65401025 - 2⁴ = 65401009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1307996 + ... + 1308045.

It is an arithmetic number, because the mean of its divisors is an integer number (13516217).

Almost surely, 2^65401025 is an apocalyptic number.

It is an amenable number.

65401025 is a deficient number, since it is larger than the sum of its proper divisors (15696277).

65401025 is a wasteful number, since it uses less digits than its factorization.

65401025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616051 (or 2616046 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 65401025 is about 8087.0900205204. The cubic root of 65401025 is about 402.8977588744.

The spelling of 65401025 in words is "sixty-five million, four hundred one thousand, twenty-five".