7421355725 has 12 divisors (see below), whose sum is σ = 10517121504. Its totient is φ = 5088929520.

The previous prime is 7421355713. The next prime is 7421355737. The reversal of 7421355725 is 5275531247.

It is an interprime number because it is at equal distance from previous prime (7421355713) and next prime (7421355737).

It is not a de Polignac number, because 7421355725 - 2²⁰ = 7420307149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21203699 + ... + 21204048.

It is an arithmetic number, because the mean of its divisors is an integer number (876426792).

Almost surely, 2^7421355725 is an apocalyptic number.

It is an amenable number.

7421355725 is a deficient number, since it is larger than the sum of its proper divisors (3095765779).

7421355725 is a wasteful number, since it uses less digits than its factorization.

7421355725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42407764 (or 42407759 counting only the distinct ones).

The product of its digits is 294000, while the sum is 41.

The square root of 7421355725 is about 86147.2908744088. The cubic root of 7421355725 is about 1950.5679454595.

The spelling of 7421355725 in words is "seven billion, four hundred twenty-one million, three hundred fifty-five thousand, seven hundred twenty-five".