40202042425 has 24 divisors (see below), whose sum is σ = 54603034200. Its totient is φ = 29225978880.

The previous prime is 40202042423. The next prime is 40202042429. The reversal of 40202042425 is 52424020204.

It can be written as a sum of positive squares in 12 ways, for example, as 9959441209 + 30242601216 = 99797^2 + 173904^2 .

It is not a de Polignac number, because 40202042425 - 2¹ = 40202042423 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40202042425.

It is not an unprimeable number, because it can be changed into a prime (40202042423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1618590 + ... + 1643239.

It is an arithmetic number, because the mean of its divisors is an integer number (2275126425).

Almost surely, 2^40202042425 is an apocalyptic number.

It is an amenable number.

40202042425 is a deficient number, since it is larger than the sum of its proper divisors (14400991775).

40202042425 is a wasteful number, since it uses less digits than its factorization.

40202042425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261885 (or 3261880 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 40202042425 its reverse (52424020204), we get a palindrome (92626062629).

The spelling of 40202042425 in words is "forty billion, two hundred two million, forty-two thousand, four hundred twenty-five".