946721225 has 6 divisors (see below), whose sum is σ = 1173934350. Its totient is φ = 757376960.

The previous prime is 946721219. The next prime is 946721249. The reversal of 946721225 is 522127649.

It can be written as a sum of positive squares in 3 ways, for example, as 116359369 + 830361856 = 10787^2 + 28816^2 .

It is not a de Polignac number, because 946721225 - 2⁶ = 946721161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18934400 + ... + 18934449.

It is an arithmetic number, because the mean of its divisors is an integer number (195655725).

Almost surely, 2^946721225 is an apocalyptic number.

It is an amenable number.

946721225 is a deficient number, since it is larger than the sum of its proper divisors (227213125).

946721225 is a wasteful number, since it uses less digits than its factorization.

946721225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37868859 (or 37868854 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 946721225 is about 30768.8352883238. The cubic root of 946721225 is about 981.9153244062.

The spelling of 946721225 in words is "nine hundred forty-six million, seven hundred twenty-one thousand, two hundred twenty-five".