8140025 has 24 divisors (see below), whose sum is σ = 10847520. Its totient is φ = 6037760.

The previous prime is 8140009. The next prime is 8140043. The reversal of 8140025 is 5200418.

It is not a de Polignac number, because 8140025 - 2⁴ = 8140009 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8139979 and 8140006.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45386 + ... + 45564.

It is an arithmetic number, because the mean of its divisors is an integer number (451980).

Almost surely, 2^8140025 is an apocalyptic number.

8140025 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8140025 is a deficient number, since it is larger than the sum of its proper divisors (2707495).

8140025 is a wasteful number, since it uses less digits than its factorization.

8140025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 8140025 is about 2853.0729047818. The cubic root of 8140025 is about 201.1601324516.

The spelling of 8140025 in words is "eight million, one hundred forty thousand, twenty-five".