1298698625 has 16 divisors (see below), whose sum is σ = 1852316544. Its totient is φ = 890535600.

The previous prime is 1298698613. The next prime is 1298698637. The reversal of 1298698625 is 5268968921.

It is an interprime number because it is at equal distance from previous prime (1298698613) and next prime (1298698637).

It is not a de Polignac number, because 1298698625 - 2¹⁸ = 1298436481 is a prime.

It is a Duffinian 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, 741239 + ... + 742988.

It is an arithmetic number, because the mean of its divisors is an integer number (115769784).

Almost surely, 2^1298698625 is an apocalyptic number.

It is an amenable number.

1298698625 is a deficient number, since it is larger than the sum of its proper divisors (553617919).

1298698625 is an equidigital number, since it uses as much as digits as its factorization.

1298698625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484249 (or 1484239 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 56.

The square root of 1298698625 is about 36037.4614117032. The cubic root of 1298698625 is about 1091.0285790573.

The spelling of 1298698625 in words is "one billion, two hundred ninety-eight million, six hundred ninety-eight thousand, six hundred twenty-five".