1245252798 has 32 divisors (see below), whose sum is σ = 2887545600. Its totient is φ = 397036728.

The previous prime is 1245252787. The next prime is 1245252803. The reversal of 1245252798 is 8972525421.

1245252798 is a `hidden beast` number, since 12 + 4 + 525 + 27 + 98 = 666.

It is a super-3 number, since 3×1245252798³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500068 + ... + 502551.

It is an arithmetic number, because the mean of its divisors is an integer number (90235800).

Almost surely, 2^1245252798 is an apocalyptic number.

1245252798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1245252798 is an abundant number, since it is smaller than the sum of its proper divisors (1642292802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245252798 is a wasteful number, since it uses less digits than its factorization.

1245252798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002653 (or 1002647 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 1245252798 is about 35288.1396222584. The cubic root of 1245252798 is about 1075.8519435087.

The spelling of 1245252798 in words is "one billion, two hundred forty-five million, two hundred fifty-two thousand, seven hundred ninety-eight".