998510025 has 24 divisors (see below), whose sum is σ = 1658720224. Its totient is φ = 530006400.

The previous prime is 998509961. The next prime is 998510033. The reversal of 998510025 is 520015899.

It is not a de Polignac number, because 998510025 - 2⁶ = 998509961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15724 + ... + 47373.

Almost surely, 2^998510025 is an apocalyptic number.

It is an amenable number.

998510025 is a deficient number, since it is larger than the sum of its proper divisors (660210199).

998510025 is a wasteful number, since it uses less digits than its factorization.

998510025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63321 (or 63316 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 998510025 is about 31599.2092464353. The cubic root of 998510025 is about 999.5030947928.

The spelling of 998510025 in words is "nine hundred ninety-eight million, five hundred ten thousand, twenty-five".