7812925 has 6 divisors (see below), whose sum is σ = 9688058. Its totient is φ = 6250320.

The previous prime is 7812923. The next prime is 7812929. The reversal of 7812925 is 5292187.

It can be written as a sum of positive squares in 3 ways, for example, as 2732409 + 5080516 = 1653^2 + 2254^2 .

It is not a de Polignac number, because 7812925 - 2¹ = 7812923 is a prime.

It is a super-2 number, since 2×7812925² = 122083594111250, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7812923) 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, 156234 + ... + 156283.

Almost surely, 2^7812925 is an apocalyptic number.

It is an amenable number.

7812925 is a deficient number, since it is larger than the sum of its proper divisors (1875133).

7812925 is a wasteful number, since it uses less digits than its factorization.

7812925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312527 (or 312522 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 7812925 is about 2795.1609971520. The cubic root of 7812925 is about 198.4287295398.

The spelling of 7812925 in words is "seven million, eight hundred twelve thousand, nine hundred twenty-five".