551010625 has 20 divisors (see below), whose sum is σ = 751147056. Its totient is φ = 400730000.

The previous prime is 551010619. The next prime is 551010637. The reversal of 551010625 is 526010155.

It is not a de Polignac number, because 551010625 - 2⁹ = 551010113 is a prime.

It is a super-2 number, since 2×551010625² = 607225417725781250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 551010625.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33199 + ... + 46948.

Almost surely, 2^551010625 is an apocalyptic number.

551010625 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

551010625 is a deficient number, since it is larger than the sum of its proper divisors (200136431).

551010625 is an equidigital number, since it uses as much as digits as its factorization.

551010625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80178 (or 80163 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 551010625 is about 23473.6155076290. The cubic root of 551010625 is about 819.8227978188.

The spelling of 551010625 in words is "five hundred fifty-one million, ten thousand, six hundred twenty-five".