8742425 has 6 divisors (see below), whose sum is σ = 10840638. Its totient is φ = 6993920.

The previous prime is 8742421. The next prime is 8742449. The reversal of 8742425 is 5242478.

It can be written as a sum of positive squares in 3 ways, for example, as 4489 + 8737936 = 67^2 + 2956^2 .

It is not a de Polignac number, because 8742425 - 2² = 8742421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8742391 and 8742400.

It is not an unprimeable number, because it can be changed into a prime (8742421) 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, 174824 + ... + 174873.

It is an arithmetic number, because the mean of its divisors is an integer number (1806773).

Almost surely, 2^8742425 is an apocalyptic number.

It is an amenable number.

8742425 is a deficient number, since it is larger than the sum of its proper divisors (2098213).

8742425 is a wasteful number, since it uses less digits than its factorization.

8742425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349707 (or 349702 counting only the distinct ones).

The product of its digits is 17920, while the sum is 32.

The square root of 8742425 is about 2956.7592056169. The cubic root of 8742425 is about 206.0047835632.

The spelling of 8742425 in words is "eight million, seven hundred forty-two thousand, four hundred twenty-five".