870236225 has 6 divisors (see below), whose sum is σ = 1079092950. Its totient is φ = 696188960.

The previous prime is 870236221. The next prime is 870236231. The reversal of 870236225 is 522632078.

It can be written as a sum of positive squares in 3 ways, for example, as 163216 + 870073009 = 404^2 + 29497^2 .

It is not a de Polignac number, because 870236225 - 2² = 870236221 is a prime.

It is a super-2 number, since 2×870236225² = 1514622174604501250, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (870236221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17404700 + ... + 17404749.

It is an arithmetic number, because the mean of its divisors is an integer number (179848825).

Almost surely, 2^870236225 is an apocalyptic number.

It is an amenable number.

870236225 is a deficient number, since it is larger than the sum of its proper divisors (208856725).

870236225 is a wasteful number, since it uses less digits than its factorization.

870236225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34809459 (or 34809454 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 870236225 is about 29499.7665244998. The cubic root of 870236225 is about 954.7266653769.

The spelling of 870236225 in words is "eight hundred seventy million, two hundred thirty-six thousand, two hundred twenty-five".