40349425 has 24 divisors (see below), whose sum is σ = 51883832. Its totient is φ = 31104000.

The previous prime is 40349417. The next prime is 40349431. The reversal of 40349425 is 52494304.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 9790641 + 30558784 = 3129^2 + 5528^2 .

It is not a de Polignac number, because 40349425 - 2³ = 40349417 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 167305 + ... + 167545.

Almost surely, 2^40349425 is an apocalyptic number.

It is an amenable number.

40349425 is a deficient number, since it is larger than the sum of its proper divisors (11534407).

40349425 is a wasteful number, since it uses less digits than its factorization.

40349425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 40349425 is about 6352.1197249422. The cubic root of 40349425 is about 342.9881507862.

The spelling of 40349425 in words is "forty million, three hundred forty-nine thousand, four hundred twenty-five".