40244887625 has 16 divisors (see below), whose sum is σ = 51450641424. Its totient is φ = 31410640000.

The previous prime is 40244887621. The next prime is 40244887667. The reversal of 40244887625 is 52678844204.

It can be written as a sum of positive squares in 8 ways, for example, as 11781148681 + 28463738944 = 108541^2 + 168712^2 .

It is not a de Polignac number, because 40244887625 - 2² = 40244887621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40244887621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3921206 + ... + 3931455.

It is an arithmetic number, because the mean of its divisors is an integer number (3215665089).

Almost surely, 2^40244887625 is an apocalyptic number.

It is an amenable number.

40244887625 is a deficient number, since it is larger than the sum of its proper divisors (11205753799).

40244887625 is an equidigital number, since it uses as much as digits as its factorization.

40244887625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7852717 (or 7852707 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 50.

The spelling of 40244887625 in words is "forty billion, two hundred forty-four million, eight hundred eighty-seven thousand, six hundred twenty-five".