1210242825 has 72 divisors (see below), whose sum is σ = 2373392736. Its totient is φ = 584640000.

The previous prime is 1210242799. The next prime is 1210242827. The reversal of 1210242825 is 5282420121.

1210242825 is a `hidden beast` number, since 1 + 210 + 2 + 428 + 25 = 666.

It is not a de Polignac number, because 1210242825 - 2⁸ = 1210242569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1210242827) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 833350 + ... + 834800.

It is an arithmetic number, because the mean of its divisors is an integer number (32963788).

Almost surely, 2^1210242825 is an apocalyptic number.

1210242825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1210242825 is a deficient number, since it is larger than the sum of its proper divisors (1163149911).

1210242825 is a wasteful number, since it uses less digits than its factorization.

1210242825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815 (or 1807 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 1210242825 is about 34788.5444507240. The cubic root of 1210242825 is about 1065.6735143302.

Adding to 1210242825 its reverse (5282420121), we get a palindrome (6492662946).

The spelling of 1210242825 in words is "one billion, two hundred ten million, two hundred forty-two thousand, eight hundred twenty-five".