1301220925 has 12 divisors (see below), whose sum is σ = 1621967616. Its totient is φ = 1035522800.

The previous prime is 1301220881. The next prime is 1301220961. The reversal of 1301220925 is 5290221031.

It is a happy number.

It is not a de Polignac number, because 1301220925 - 2²⁵ = 1267666493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 1301220925.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131479 + ... + 141028.

It is an arithmetic number, because the mean of its divisors is an integer number (135163968).

Almost surely, 2^1301220925 is an apocalyptic number.

It is an amenable number.

1301220925 is a deficient number, since it is larger than the sum of its proper divisors (320746691).

1301220925 is a wasteful number, since it uses less digits than its factorization.

1301220925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272708 (or 272703 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1301220925 is about 36072.4399646046. The cubic root of 1301220925 is about 1091.7344450922.

Adding to 1301220925 its reverse (5290221031), we get a palindrome (6591441956).

The spelling of 1301220925 in words is "one billion, three hundred one million, two hundred twenty thousand, nine hundred twenty-five".