40090925 has 24 divisors (see below), whose sum is σ = 57157056. Its totient is φ = 27325440.

The previous prime is 40090903. The next prime is 40090933. The reversal of 40090925 is 52909004.

It is not a de Polignac number, because 40090925 - 2⁸ = 40090669 is a prime.

It is a Duffinian number.

It is a Curzon 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, 33182 + ... + 34368.

It is an arithmetic number, because the mean of its divisors is an integer number (2381544).

Almost surely, 2^40090925 is an apocalyptic number.

It is an amenable number.

40090925 is a deficient number, since it is larger than the sum of its proper divisors (17066131).

40090925 is a wasteful number, since it uses less digits than its factorization.

40090925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397 (or 1392 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 40090925 is about 6331.7394924302. The cubic root of 40090925 is about 342.2541258409.

Adding to 40090925 its reverse (52909004), we get a palindrome (92999929).

The spelling of 40090925 in words is "forty million, ninety thousand, nine hundred twenty-five".