551217025 has 12 divisors (see below), whose sum is σ = 684083200. Its totient is φ = 440603280.

The previous prime is 551217019. The next prime is 551217031. The reversal of 551217025 is 520712155.

It is an interprime number because it is at equal distance from previous prime (551217019) and next prime (551217031).

It is not a de Polignac number, because 551217025 - 2⁹ = 551216513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551216984 and 551217002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23356 + ... + 40594.

Almost surely, 2^551217025 is an apocalyptic number.

It is an amenable number.

551217025 is a deficient number, since it is larger than the sum of its proper divisors (132866175).

551217025 is a wasteful number, since it uses less digits than its factorization.

551217025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18528 (or 18523 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 551217025 is about 23478.0115214215. The cubic root of 551217025 is about 819.9251493248.

The spelling of 551217025 in words is "five hundred fifty-one million, two hundred seventeen thousand, twenty-five".