551404425 has 48 divisors (see below), whose sum is σ = 1071056448. Its totient is φ = 246777600.

The previous prime is 551404417. The next prime is 551404433. The reversal of 551404425 is 524404155.

It is an interprime number because it is at equal distance from previous prime (551404417) and next prime (551404433).

It is not a de Polignac number, because 551404425 - 2³ = 551404417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551404392 and 551404401.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14982 + ... + 36431.

It is an arithmetic number, because the mean of its divisors is an integer number (22313676).

Almost surely, 2^551404425 is an apocalyptic number.

551404425 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

551404425 is a deficient number, since it is larger than the sum of its proper divisors (519652023).

551404425 is a wasteful number, since it uses less digits than its factorization.

551404425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51450 (or 51445 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 551404425 is about 23482.0021505833. The cubic root of 551404425 is about 820.0180568104.

The spelling of 551404425 in words is "five hundred fifty-one million, four hundred four thousand, four hundred twenty-five".