15641025 has 24 divisors (see below), whose sum is σ = 25977504. Its totient is φ = 8304000.

The previous prime is 15641023. The next prime is 15641039. The reversal of 15641025 is 52014651.

It is not a de Polignac number, because 15641025 - 2¹ = 15641023 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15640986 and 15641004.

It is not an unprimeable number, because it can be changed into a prime (15641023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25725 + ... + 26325.

It is an arithmetic number, because the mean of its divisors is an integer number (1082396).

Almost surely, 2^15641025 is an apocalyptic number.

15641025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15641025 is a deficient number, since it is larger than the sum of its proper divisors (10336479).

15641025 is a wasteful number, since it uses less digits than its factorization.

15641025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 15641025 is about 3954.8735757291. The cubic root of 15641025 is about 250.0854374651.

Adding to 15641025 its reverse (52014651), we get a palindrome (67655676).

The spelling of 15641025 in words is "fifteen million, six hundred forty-one thousand, twenty-five".