551355425 has 24 divisors (see below), whose sum is σ = 714864960. Its totient is φ = 421044800.

The previous prime is 551355421. The next prime is 551355437. The reversal of 551355425 is 524553155.

It is not a de Polignac number, because 551355425 - 2² = 551355421 is a prime.

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 not an unprimeable number, because it can be changed into a prime (551355421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 540566 + ... + 541584.

It is an arithmetic number, because the mean of its divisors is an integer number (29786040).

Almost surely, 2^551355425 is an apocalyptic number.

It is an amenable number.

551355425 is a deficient number, since it is larger than the sum of its proper divisors (163509535).

551355425 is a wasteful number, since it uses less digits than its factorization.

551355425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993 (or 1988 counting only the distinct ones).

The product of its digits is 75000, while the sum is 35.

The square root of 551355425 is about 23480.9587751437. The cubic root of 551355425 is about 819.9937660640.

The spelling of 551355425 in words is "five hundred fifty-one million, three hundred fifty-five thousand, four hundred twenty-five".