15040725 has 24 divisors (see below), whose sum is σ = 28420800. Its totient is φ = 6875520.

The previous prime is 15040721. The next prime is 15040741. The reversal of 15040725 is 52704051.

It is not a de Polignac number, because 15040725 - 2² = 15040721 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15040695 and 15040704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15040721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13800 + ... + 14849.

It is an arithmetic number, because the mean of its divisors is an integer number (1184200).

Almost surely, 2^15040725 is an apocalyptic number.

15040725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15040725 is a deficient number, since it is larger than the sum of its proper divisors (13380075).

15040725 is a wasteful number, since it uses less digits than its factorization.

15040725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28669 (or 28664 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 15040725 is about 3878.2373573571. The cubic root of 15040725 is about 246.8441979410.

Adding to 15040725 its reverse (52704051), we get a palindrome (67744776).

The spelling of 15040725 in words is "fifteen million, forty thousand, seven hundred twenty-five".