40135425 has 24 divisors (see below), whose sum is σ = 72391200. Its totient is φ = 19459200.

The previous prime is 40135423. The next prime is 40135427. The reversal of 40135425 is 52453104.

It is an interprime number because it is at equal distance from previous prime (40135423) and next prime (40135427).

It is not a de Polignac number, because 40135425 - 2¹ = 40135423 is a prime.

It is a super-2 number, since 2×40135425² = 3221704679861250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40135395 and 40135404.

It is not an unprimeable number, because it can be changed into a prime (40135423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23500 + ... + 25149.

It is an arithmetic number, because the mean of its divisors is an integer number (3016300).

Almost surely, 2^40135425 is an apocalyptic number.

It is an amenable number.

40135425 is a deficient number, since it is larger than the sum of its proper divisors (32255775).

40135425 is a wasteful number, since it uses less digits than its factorization.

40135425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48673 (or 48668 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 40135425 is about 6335.2525600800. The cubic root of 40135425 is about 342.3807104065.

Adding to 40135425 its reverse (52453104), we get a palindrome (92588529).

The spelling of 40135425 in words is "forty million, one hundred thirty-five thousand, four hundred twenty-five".