40426225 has 36 divisors (see below), whose sum is σ = 59378268. Its totient is φ = 27216000.

The previous prime is 40426219. The next prime is 40426273. The reversal of 40426225 is 52262404.

It can be written as a sum of positive squares in 6 ways, for example, as 9144576 + 31281649 = 3024^2 + 5593^2 .

It is not a de Polignac number, because 40426225 - 2¹¹ = 40424177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40426225.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 74455 + ... + 74995.

Almost surely, 2^40426225 is an apocalyptic number.

It is an amenable number.

40426225 is a deficient number, since it is larger than the sum of its proper divisors (18952043).

40426225 is a wasteful number, since it uses less digits than its factorization.

40426225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 40426225 is about 6358.1620772044. The cubic root of 40426225 is about 343.2056243113.

Adding to 40426225 its reverse (52262404), we get a palindrome (92688629).

The spelling of 40426225 in words is "forty million, four hundred twenty-six thousand, two hundred twenty-five".