7621725 has 24 divisors (see below), whose sum is σ = 12703552. Its totient is φ = 4032000.

The previous prime is 7621723. The next prime is 7621759. The reversal of 7621725 is 5271267.

It is not a de Polignac number, because 7621725 - 2¹ = 7621723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7621692 and 7621701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7621723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10989 + ... + 11661.

Almost surely, 2^7621725 is an apocalyptic number.

7621725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7621725 is a deficient number, since it is larger than the sum of its proper divisors (5081827).

7621725 is a wasteful number, since it uses less digits than its factorization.

7621725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 832 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 7621725 is about 2760.7471814710. The cubic root of 7621725 is about 196.7966758230.

The spelling of 7621725 in words is "seven million, six hundred twenty-one thousand, seven hundred twenty-five".