1295225921 has 8 divisors (see below), whose sum is σ = 1420869600. Its totient is φ = 1170898240.

The previous prime is 1295225917. The next prime is 1295225923.

It is a happy number.

1295225921 is nontrivially palindromic in base 10.

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 1295225921 - 2² = 1295225917 is a prime.

It is a super-2 number, since 2×1295225921² = 3355220372860596482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1295225923) 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 7 ways as a sum of consecutive naturals, for example, 326936 + ... + 330873.

It is an arithmetic number, because the mean of its divisors is an integer number (177608700).

Almost surely, 2^1295225921 is an apocalyptic number.

1295225921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1295225921 is a deficient number, since it is larger than the sum of its proper divisors (125643679).

1295225921 is a wasteful number, since it uses less digits than its factorization.

1295225921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657999.

The product of its digits is 32400, while the sum is 38.

The square root of 1295225921 is about 35989.2472969358. The cubic root of 1295225921 is about 1090.0552453552.

The spelling of 1295225921 in words is "one billion, two hundred ninety-five million, two hundred twenty-five thousand, nine hundred twenty-one".