7421755425 has 48 divisors (see below), whose sum is σ = 14365663872. Its totient is φ = 3310041600.

The previous prime is 7421755387. The next prime is 7421755441. The reversal of 7421755425 is 5245571247.

It is not a de Polignac number, because 7421755425 - 2¹¹ = 7421753377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150874 + ... + 193923.

It is an arithmetic number, because the mean of its divisors is an integer number (299284664).

Almost surely, 2^7421755425 is an apocalyptic number.

7421755425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7421755425 is a deficient number, since it is larger than the sum of its proper divisors (6943908447).

7421755425 is a wasteful number, since it uses less digits than its factorization.

7421755425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344858 (or 344853 counting only the distinct ones).

The product of its digits is 392000, while the sum is 42.

The square root of 7421755425 is about 86149.6107071878. The cubic root of 7421755425 is about 1950.6029627816.

The spelling of 7421755425 in words is "seven billion, four hundred twenty-one million, seven hundred fifty-five thousand, four hundred twenty-five".