15798425 has 6 divisors (see below), whose sum is σ = 19590078. Its totient is φ = 12638720.

The previous prime is 15798403. The next prime is 15798463. The reversal of 15798425 is 52489751.

It can be written as a sum of positive squares in 3 ways, for example, as 29584 + 15768841 = 172^2 + 3971^2 .

It is not a de Polignac number, because 15798425 - 2⁸ = 15798169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 315944 + ... + 315993.

It is an arithmetic number, because the mean of its divisors is an integer number (3265013).

Almost surely, 2^15798425 is an apocalyptic number.

It is an amenable number.

15798425 is a deficient number, since it is larger than the sum of its proper divisors (3791653).

15798425 is an equidigital number, since it uses as much as digits as its factorization.

15798425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631947 (or 631942 counting only the distinct ones).

The product of its digits is 100800, while the sum is 41.

The square root of 15798425 is about 3974.7232608070. The cubic root of 15798425 is about 250.9215322726.

The spelling of 15798425 in words is "fifteen million, seven hundred ninety-eight thousand, four hundred twenty-five".