40390691325 has 12 divisors (see below), whose sum is σ = 66779276448. Its totient is φ = 21541702000.

The previous prime is 40390691303. The next prime is 40390691381. The reversal of 40390691325 is 52319609304.

It is a happy number.

It is not a de Polignac number, because 40390691325 - 2⁶ = 40390691261 is a prime.

It is a super-2 number, since 2×40390691325² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269271201 + ... + 269271350.

It is an arithmetic number, because the mean of its divisors is an integer number (5564939704).

Almost surely, 2^40390691325 is an apocalyptic number.

It is an amenable number.

40390691325 is a deficient number, since it is larger than the sum of its proper divisors (26388585123).

40390691325 is a wasteful number, since it uses less digits than its factorization.

40390691325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538542564 (or 538542559 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 42.

The spelling of 40390691325 in words is "forty billion, three hundred ninety million, six hundred ninety-one thousand, three hundred twenty-five".