15225040001 has 4 divisors (see below), whose sum is σ = 15452279472. Its totient is φ = 14997800532.

The previous prime is 15225039923. The next prime is 15225040007. The reversal of 15225040001 is 10004052251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15225040001 - 2¹⁰ = 15225038977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15225040007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113619635 + ... + 113619768.

It is an arithmetic number, because the mean of its divisors is an integer number (3863069868).

Almost surely, 2^15225040001 is an apocalyptic number.

It is an amenable number.

15225040001 is a deficient number, since it is larger than the sum of its proper divisors (227239471).

15225040001 is an equidigital number, since it uses as much as digits as its factorization.

15225040001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227239470.

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 15225040001 its reverse (10004052251), we get a palindrome (25229092252).

The spelling of 15225040001 in words is "fifteen billion, two hundred twenty-five million, forty thousand, one".