551908925 has 12 divisors (see below), whose sum is σ = 688328340. Its totient is φ = 438971520.

The previous prime is 551908901. The next prime is 551908933. The reversal of 551908925 is 529809155.

It can be written as a sum of positive squares in 6 ways, for example, as 22080601 + 529828324 = 4699^2 + 23018^2 .

It is not a de Polignac number, because 551908925 - 2¹⁰ = 551907901 is a prime.

It is a super-2 number, since 2×551908925² = 609206922989311250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 59480 + ... + 68129.

It is an arithmetic number, because the mean of its divisors is an integer number (57360695).

Almost surely, 2^551908925 is an apocalyptic number.

It is an amenable number.

551908925 is a deficient number, since it is larger than the sum of its proper divisors (136419415).

551908925 is a wasteful number, since it uses less digits than its factorization.

551908925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127792 (or 127787 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 44.

The square root of 551908925 is about 23492.7419642748. The cubic root of 551908925 is about 820.2680687106.

The spelling of 551908925 in words is "five hundred fifty-one million, nine hundred eight thousand, nine hundred twenty-five".