6940025 has 6 divisors (see below), whose sum is σ = 8605662. Its totient is φ = 5552000.

The previous prime is 6940007. The next prime is 6940027. The reversal of 6940025 is 5200496.

It can be written as a sum of positive squares in 3 ways, for example, as 1827904 + 5112121 = 1352^2 + 2261^2 .

It is not a de Polignac number, because 6940025 - 2²⁰ = 5891449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6939976 and 6940003.

It is not an unprimeable number, because it can be changed into a prime (6940027) 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, 138776 + ... + 138825.

It is an arithmetic number, because the mean of its divisors is an integer number (1434277).

Almost surely, 2^6940025 is an apocalyptic number.

It is an amenable number.

6940025 is a deficient number, since it is larger than the sum of its proper divisors (1665637).

6940025 is a wasteful number, since it uses less digits than its factorization.

6940025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277611 (or 277606 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 6940025 is about 2634.3927193947. The cubic root of 6940025 is about 190.7452264957.

The spelling of 6940025 in words is "six million, nine hundred forty thousand, twenty-five".