53709625 has 8 divisors (see below), whose sum is σ = 67029768. Its totient is φ = 42967600.

The previous prime is 53709611. The next prime is 53709629. The reversal of 53709625 is 52690735.

It can be written as a sum of positive squares in 4 ways, for example, as 17131321 + 36578304 = 4139^2 + 6048^2 .

It is a de Polignac number, because none of the positive numbers 2^k-53709625 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53709629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214714 + ... + 214963.

It is an arithmetic number, because the mean of its divisors is an integer number (8378721).

Almost surely, 2^53709625 is an apocalyptic number.

It is an amenable number.

53709625 is a deficient number, since it is larger than the sum of its proper divisors (13320143).

53709625 is an equidigital number, since it uses as much as digits as its factorization.

53709625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429692 (or 429682 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 53709625 is about 7328.6850798762. The cubic root of 53709625 is about 377.2975977394.

The spelling of 53709625 in words is "fifty-three million, seven hundred nine thousand, six hundred twenty-five".