3507200725 has 72 divisors (see below), whose sum is σ = 5383101888. Its totient is φ = 2258860800.

The previous prime is 3507200699. The next prime is 3507200731. The reversal of 3507200725 is 5270027053.

It is not a de Polignac number, because 3507200725 - 2¹⁵ = 3507167957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7142730 + ... + 7143220.

It is an arithmetic number, because the mean of its divisors is an integer number (74765304).

Almost surely, 2^3507200725 is an apocalyptic number.

3507200725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3507200725 is a deficient number, since it is larger than the sum of its proper divisors (1875901163).

3507200725 is an frugal number, since it uses more digits than its factorization.

3507200725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 3507200725 is about 59221.6237957049. The cubic root of 3507200725 is about 1519.3349937544.

Adding to 3507200725 its reverse (5270027053), we get a palindrome (8777227778).

The spelling of 3507200725 in words is "three billion, five hundred seven million, two hundred thousand, seven hundred twenty-five".