15715725 has 12 divisors (see below), whose sum is σ = 25983456. Its totient is φ = 8381680.

The previous prime is 15715723. The next prime is 15715727. The reversal of 15715725 is 52751751.

It is an interprime number because it is at equal distance from previous prime (15715723) and next prime (15715727).

It is not a de Polignac number, because 15715725 - 2¹ = 15715723 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15715723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104697 + ... + 104846.

It is an arithmetic number, because the mean of its divisors is an integer number (2165288).

Almost surely, 2^15715725 is an apocalyptic number.

15715725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15715725 is a deficient number, since it is larger than the sum of its proper divisors (10267731).

15715725 is a wasteful number, since it uses less digits than its factorization.

15715725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209556 (or 209551 counting only the distinct ones).

The product of its digits is 12250, while the sum is 33.

The square root of 15715725 is about 3964.3063706026. The cubic root of 15715725 is about 250.4829331682.

The spelling of 15715725 in words is "fifteen million, seven hundred fifteen thousand, seven hundred twenty-five".