7661425 has 6 divisors (see below), whose sum is σ = 9500198. Its totient is φ = 6129120.

The previous prime is 7661411. The next prime is 7661471. The reversal of 7661425 is 5241667.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 355216 + 7306209 = 596^2 + 2703^2 .

It is not a de Polignac number, because 7661425 - 2⁵ = 7661393 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, 153204 + ... + 153253.

Almost surely, 2^7661425 is an apocalyptic number.

It is an amenable number.

7661425 is a deficient number, since it is larger than the sum of its proper divisors (1838773).

7661425 is a wasteful number, since it uses less digits than its factorization.

7661425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306467 (or 306462 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 7661425 is about 2767.9279253622. The cubic root of 7661425 is about 197.1377754214.

The spelling of 7661425 in words is "seven million, six hundred sixty-one thousand, four hundred twenty-five".