65290625 has 24 divisors (see below), whose sum is σ = 86478840. Its totient is φ = 49120000.

The previous prime is 65290613. The next prime is 65290627. The reversal of 65290625 is 52609256.

It can be written as a sum of positive squares in 12 ways, for example, as 49098049 + 16192576 = 7007^2 + 4024^2 .

It is not a de Polignac number, because 65290625 - 2⁸ = 65290369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65290627) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52511 + ... + 53739.

It is an arithmetic number, because the mean of its divisors is an integer number (3603285).

Almost surely, 2^65290625 is an apocalyptic number.

It is an amenable number.

65290625 is a deficient number, since it is larger than the sum of its proper divisors (21188215).

65290625 is an equidigital number, since it uses as much as digits as its factorization.

65290625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 65290625 is about 8080.2614437900. The cubic root of 65290625 is about 402.6709277499.

The spelling of 65290625 in words is "sixty-five million, two hundred ninety thousand, six hundred twenty-five".