15243925 has 6 divisors (see below), whose sum is σ = 18902498. Its totient is φ = 12195120.

The previous prime is 15243869. The next prime is 15243929. The reversal of 15243925 is 52934251.

15243925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 4498641 + 10745284 = 2121^2 + 3278^2 .

It is a de Polignac number, because none of the positive numbers 2^k-15243925 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15243929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 304854 + ... + 304903.

Almost surely, 2^15243925 is an apocalyptic number.

It is an amenable number.

15243925 is a deficient number, since it is larger than the sum of its proper divisors (3658573).

15243925 is an equidigital number, since it uses as much as digits as its factorization.

15243925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609767 (or 609762 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 15243925 is about 3904.3469364287. The cubic root of 15243925 is about 247.9508498244.

The spelling of 15243925 in words is "fifteen million, two hundred forty-three thousand, nine hundred twenty-five".