40306025 has 12 divisors (see below), whose sum is σ = 51044352. Its totient is φ = 31557840.

The previous prime is 40306009. The next prime is 40306033. The reversal of 40306025 is 52060304.

It is not a de Polignac number, because 40306025 - 2⁴ = 40306009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40305988 and 40306006.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15977 + ... + 18326.

It is an arithmetic number, because the mean of its divisors is an integer number (4253696).

Almost surely, 2^40306025 is an apocalyptic number.

It is an amenable number.

40306025 is a deficient number, since it is larger than the sum of its proper divisors (10738327).

40306025 is a wasteful number, since it uses less digits than its factorization.

40306025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34360 (or 34355 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 40306025 is about 6348.7026233712. The cubic root of 40306025 is about 342.8651335357.

Adding to 40306025 its reverse (52060304), we get a palindrome (92366329).

The spelling of 40306025 in words is "forty million, three hundred six thousand, twenty-five".