40135025 has 12 divisors (see below), whose sum is σ = 56877312. Its totient is φ = 27521040.

The previous prime is 40135013. The next prime is 40135027. The reversal of 40135025 is 52053104.

40135025 is nontrivially palindromic in base 13.

It is not a de Polignac number, because 40135025 - 2⁶ = 40134961 is a prime.

It is a super-2 number, since 2×40135025² = 3221640463501250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40134988 and 40135006.

It is not an unprimeable number, because it can be changed into a prime (40135027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114497 + ... + 114846.

It is an arithmetic number, because the mean of its divisors is an integer number (4739776).

Almost surely, 2^40135025 is an apocalyptic number.

It is an amenable number.

40135025 is a deficient number, since it is larger than the sum of its proper divisors (16742287).

40135025 is a wasteful number, since it uses less digits than its factorization.

40135025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229360 (or 229355 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 40135025 is about 6335.2209906206. The cubic root of 40135025 is about 342.3795729846.

Adding to 40135025 its reverse (52053104), we get a palindrome (92188129).

The spelling of 40135025 in words is "forty million, one hundred thirty-five thousand, twenty-five".