7657425 has 18 divisors (see below), whose sum is σ = 13715702. Its totient is φ = 4083840.

The previous prime is 7657423. The next prime is 7657427. The reversal of 7657425 is 5247567.

It is an interprime number because it is at equal distance from previous prime (7657423) and next prime (7657427).

It can be written as a sum of positive squares in 3 ways, for example, as 938961 + 6718464 = 969^2 + 2592^2 .

It is not a de Polignac number, because 7657425 - 2¹ = 7657423 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7657425.

It is not an unprimeable number, because it can be changed into a prime (7657423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16792 + ... + 17241.

Almost surely, 2^7657425 is an apocalyptic number.

7657425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7657425 is a deficient number, since it is larger than the sum of its proper divisors (6058277).

7657425 is a wasteful number, since it uses less digits than its factorization.

7657425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34049 (or 34041 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 7657425 is about 2767.2052688588. The cubic root of 7657425 is about 197.1034611620.

The spelling of 7657425 in words is "seven million, six hundred fifty-seven thousand, four hundred twenty-five".