7401686225 has 6 divisors (see below), whose sum is σ = 9178090950. Its totient is φ = 5921348960.

The previous prime is 7401686203. The next prime is 7401686239. The reversal of 7401686225 is 5226861047.

It can be written as a sum of positive squares in 3 ways, for example, as 2406589249 + 4995096976 = 49057^2 + 70676^2 .

It is not a de Polignac number, because 7401686225 - 2⁶ = 7401686161 is a prime.

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, 148033700 + ... + 148033749.

It is an arithmetic number, because the mean of its divisors is an integer number (1529681825).

Almost surely, 2^7401686225 is an apocalyptic number.

It is an amenable number.

7401686225 is a deficient number, since it is larger than the sum of its proper divisors (1776404725).

7401686225 is a wasteful number, since it uses less digits than its factorization.

7401686225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296067459 (or 296067454 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 7401686225 is about 86033.0530958887. The cubic root of 7401686225 is about 1948.8431643810.

The spelling of 7401686225 in words is "seven billion, four hundred one million, six hundred eighty-six thousand, two hundred twenty-five".