315085625 has 30 divisors (see below), whose sum is σ = 412025922. Its totient is φ = 240856000.

The previous prime is 315085621. The next prime is 315085649. The reversal of 315085625 is 526580513.

It can be written as a sum of positive squares in 5 ways, for example, as 136515856 + 178569769 = 11684^2 + 13363^2 .

It is not a de Polignac number, because 315085625 - 2² = 315085621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (315085621) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 330149 + ... + 331101.

Almost surely, 2^315085625 is an apocalyptic number.

It is an amenable number.

315085625 is a deficient number, since it is larger than the sum of its proper divisors (96940297).

315085625 is an frugal number, since it uses more digits than its factorization.

315085625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 315085625 is about 17750.6513964981. The cubic root of 315085625 is about 680.4708568447.

The spelling of 315085625 in words is "three hundred fifteen million, eighty-five thousand, six hundred twenty-five".