65169625 has 8 divisors (see below), whose sum is σ = 81331848. Its totient is φ = 52135600.

The previous prime is 65169613. The next prime is 65169631. The reversal of 65169625 is 52696156.

It can be written as a sum of positive squares in 4 ways, for example, as 2253001 + 62916624 = 1501^2 + 7932^2 .

It is not a de Polignac number, because 65169625 - 2⁷ = 65169497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260554 + ... + 260803.

It is an arithmetic number, because the mean of its divisors is an integer number (10166481).

Almost surely, 2^65169625 is an apocalyptic number.

It is an amenable number.

65169625 is a deficient number, since it is larger than the sum of its proper divisors (16162223).

65169625 is an equidigital number, since it uses as much as digits as its factorization.

65169625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521372 (or 521362 counting only the distinct ones).

The product of its digits is 97200, while the sum is 40.

The square root of 65169625 is about 8072.7705900762. The cubic root of 65169625 is about 402.4220236534.

The spelling of 65169625 in words is "sixty-five million, one hundred sixty-nine thousand, six hundred twenty-five".