1207215025 has 9 divisors (see below), whose sum is σ = 1497162081. Its totient is φ = 965633040.

The previous prime is 1207215019. The next prime is 1207215041. The reversal of 1207215025 is 5205127021.

The square root of 1207215025 is 34745.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 93257649 + 1113957376 = 9657^2 + 33376^2 .

It is not a de Polignac number, because 1207215025 - 2³ = 1207215017 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 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 8 ways as a sum of consecutive naturals, for example, 170251 + ... + 177199.

Almost surely, 2^1207215025 is an apocalyptic number.

1207215025 is the 34745-th square number.

1207215025 is the 17373-rd centered octagonal number.

It is an amenable number.

1207215025 is a deficient number, since it is larger than the sum of its proper divisors (289947056).

1207215025 is an frugal number, since it uses more digits than its factorization.

1207215025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13908 (or 6954 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The cubic root of 1207215025 is about 1064.7840672521.

Multiplying 1207215025 by its sum of digits (25), we get a square (30180375625 = 173725²).

1207215025 divided by its sum of digits (25) gives a square (48288601 = 6949²).

The spelling of 1207215025 in words is "one billion, two hundred seven million, two hundred fifteen thousand, twenty-five".