7025121438 has 16 divisors (see below), whose sum is σ = 14151325440. Its totient is φ = 2324860056.

The previous prime is 7025121437. The next prime is 7025121457. The reversal of 7025121438 is 8341215207.

It is a junction number, because it is equal to n+sod(n) for n = 7025121399 and 7025121408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7025121437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4210870 + ... + 4212537.

It is an arithmetic number, because the mean of its divisors is an integer number (884457840).

Almost surely, 2^7025121438 is an apocalyptic number.

7025121438 is an abundant number, since it is smaller than the sum of its proper divisors (7126204002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7025121438 is a wasteful number, since it uses less digits than its factorization.

7025121438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8423551.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 7025121438 is about 83815.9975064426. The cubic root of 7025121438 is about 1915.2168117975.

The spelling of 7025121438 in words is "seven billion, twenty-five million, one hundred twenty-one thousand, four hundred thirty-eight".