15250001 has 8 divisors (see below), whose sum is σ = 16535400. Its totient is φ = 13980672.

The previous prime is 15249979. The next prime is 15250009. The reversal of 15250001 is 10005251.

It can be written as a sum of positive squares in 4 ways, for example, as 1560001 + 13690000 = 1249^2 + 3700^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15250001 - 2¹⁸ = 14987857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15250009) 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 7 ways as a sum of consecutive naturals, for example, 2000 + ... + 5873.

It is an arithmetic number, because the mean of its divisors is an integer number (2066925).

Almost surely, 2^15250001 is an apocalyptic number.

It is an amenable number.

15250001 is a deficient number, since it is larger than the sum of its proper divisors (1285399).

15250001 is a wasteful number, since it uses less digits than its factorization.

15250001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8035.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 15250001 is about 3905.1249659902. The cubic root of 15250001 is about 247.9837886125.

Adding to 15250001 its reverse (10005251), we get a palindrome (25255252).

The spelling of 15250001 in words is "fifteen million, two hundred fifty thousand, one".