551626291425 has 24 divisors (see below), whose sum is σ = 994933239840. Its totient is φ = 267455171200.

The previous prime is 551626291393. The next prime is 551626291439. The reversal of 551626291425 is 524192626155.

551626291425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 551626291425 - 2⁵ = 551626291393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334318140 + ... + 334319789.

It is an arithmetic number, because the mean of its divisors is an integer number (41455551660).

Almost surely, 2^551626291425 is an apocalyptic number.

551626291425 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

551626291425 is a deficient number, since it is larger than the sum of its proper divisors (443306948415).

551626291425 is a wasteful number, since it uses less digits than its factorization.

551626291425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668637953 (or 668637948 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 48.

It can be divided in two parts, 551626 and 291425, that added together give a triangular number (843051 = T₁₂₉₈).

The spelling of 551626291425 in words is "five hundred fifty-one billion, six hundred twenty-six million, two hundred ninety-one thousand, four hundred twenty-five".