15270625 has 20 divisors (see below), whose sum is σ = 19484388. Its totient is φ = 11960000.

The previous prime is 15270601. The next prime is 15270659. The reversal of 15270625 is 52607251.

It can be written as a sum of positive squares in 10 ways, for example, as 11444689 + 3825936 = 3383^2 + 1956^2 .

It is not a de Polignac number, because 15270625 - 2⁹ = 15270113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15270593 and 15270602.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32895 + ... + 33355.

Almost surely, 2^15270625 is an apocalyptic number.

It is an amenable number.

15270625 is a deficient number, since it is larger than the sum of its proper divisors (4213763).

15270625 is an frugal number, since it uses more digits than its factorization.

15270625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 15270625 is about 3907.7647063251. The cubic root of 15270625 is about 248.0955287980.

Adding to 15270625 its reverse (52607251), we get a palindrome (67877876).

The spelling of 15270625 in words is "fifteen million, two hundred seventy thousand, six hundred twenty-five".