7213440925 has 6 divisors (see below), whose sum is σ = 8944666778. Its totient is φ = 5770752720.

The previous prime is 7213440887. The next prime is 7213440937. The reversal of 7213440925 is 5290443127.

It can be written as a sum of positive squares in 3 ways, for example, as 6959044 + 7206481881 = 2638^2 + 84891^2 .

It is not a de Polignac number, because 7213440925 - 2¹⁵ = 7213408157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144268794 + ... + 144268843.

Almost surely, 2^7213440925 is an apocalyptic number.

It is an amenable number.

7213440925 is a deficient number, since it is larger than the sum of its proper divisors (1731225853).

7213440925 is a wasteful number, since it uses less digits than its factorization.

7213440925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288537647 (or 288537642 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 7213440925 is about 84931.9782237527. The cubic root of 7213440925 is about 1932.1796028774.

The spelling of 7213440925 in words is "seven billion, two hundred thirteen million, four hundred forty thousand, nine hundred twenty-five".