40004001725 has 48 divisors (see below), whose sum is σ = 53232396480. Its totient is φ = 29734272000.

The previous prime is 40004001659. The next prime is 40004001761. The reversal of 40004001725 is 52710040004.

It is not a de Polignac number, because 40004001725 - 2²⁶ = 39936892861 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40004001725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5129429 + ... + 5137221.

It is an arithmetic number, because the mean of its divisors is an integer number (1109008260).

Almost surely, 2^40004001725 is an apocalyptic number.

It is an amenable number.

40004001725 is a deficient number, since it is larger than the sum of its proper divisors (13228394755).

40004001725 is a wasteful number, since it uses less digits than its factorization.

40004001725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8030 (or 8025 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

Adding to 40004001725 its reverse (52710040004), we get a palindrome (92714041729).

The spelling of 40004001725 in words is "forty billion, four million, one thousand, seven hundred twenty-five".