40342731025 has 45 divisors (see below), whose sum is σ = 53536646631. Its totient is φ = 30157173120.

The previous prime is 40342730969. The next prime is 40342731031. The reversal of 40342731025 is 52013724304.

It is a happy number.

The square root of 40342731025 is 200855.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 4396087809 + 35946643216 = 66303^2 + 189596^2 .

It is not a de Polignac number, because 40342731025 - 2¹¹ = 40342728977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 290235406 + ... + 290235544.

Almost surely, 2^40342731025 is an apocalyptic number.

40342731025 is the 200855-th square number.

40342731025 is the 100428-th centered octagonal number.

It is an amenable number.

40342731025 is a deficient number, since it is larger than the sum of its proper divisors (13193915606).

40342731025 is an frugal number, since it uses more digits than its factorization.

40342731025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The spelling of 40342731025 in words is "forty billion, three hundred forty-two million, seven hundred thirty-one thousand, twenty-five".