551064725 has 12 divisors (see below), whose sum is σ = 692946720. Its totient is φ = 434641200.

The previous prime is 551064721. The next prime is 551064739. The reversal of 551064725 is 527460155.

It is not a de Polignac number, because 551064725 - 2² = 551064721 is a prime.

It is a super-2 number, since 2×551064725² = 607344662278651250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551064721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153455 + ... + 157004.

It is an arithmetic number, because the mean of its divisors is an integer number (57745560).

Almost surely, 2^551064725 is an apocalyptic number.

It is an amenable number.

551064725 is a deficient number, since it is larger than the sum of its proper divisors (141881995).

551064725 is a wasteful number, since it uses less digits than its factorization.

551064725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310540 (or 310535 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 551064725 is about 23474.7678369776. The cubic root of 551064725 is about 819.8496278894.

The spelling of 551064725 in words is "five hundred fifty-one million, sixty-four thousand, seven hundred twenty-five".