1225001501 has 8 divisors (see below), whose sum is σ = 1253961984. Its totient is φ = 1196062560.

The previous prime is 1225001489. The next prime is 1225001509. The reversal of 1225001501 is 1051005221.

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 1225001501 - 2¹⁸ = 1224739357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225001501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225001509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204785 + ... + 210681.

It is an arithmetic number, because the mean of its divisors is an integer number (156745248).

Almost surely, 2^1225001501 is an apocalyptic number.

It is an amenable number.

1225001501 is a deficient number, since it is larger than the sum of its proper divisors (28960483).

1225001501 is an equidigital number, since it uses as much as digits as its factorization.

1225001501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10771.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 1225001501 is about 35000.0214428506. The cubic root of 1225001501 is about 1069.9879175856.

Adding to 1225001501 its reverse (1051005221), we get a palindrome (2276006722).

The spelling of 1225001501 in words is "one billion, two hundred twenty-five million, one thousand, five hundred one".