551373077025 has 135 divisors (see below), whose sum is σ = 1059628621051. Its totient is φ = 283426456320.

The previous prime is 551373077011. The next prime is 551373077041. The reversal of 551373077025 is 520770373155.

The square root of 551373077025 is 742545.

It is a perfect power (a square), and thus also a powerful number.

551373077025 is a `hidden beast` number, since 551 + 3 + 7 + 3 + 0 + 7 + 70 + 25 = 666.

It can be written as a sum of positive squares in 13 ways, for example, as 503054003169 + 48319073856 = 709263^2 + 219816^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 551373077025 - 2¹¹ = 551373074977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 969020941 + ... + 969021509.

Almost surely, 2^551373077025 is an apocalyptic number.

551373077025 is the 742545-th square number.

551373077025 is the 371273-rd centered octagonal number.

It is an amenable number.

551373077025 is a deficient number, since it is larger than the sum of its proper divisors (508255544026).

551373077025 is an frugal number, since it uses more digits than its factorization.

551373077025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 771750, while the sum is 45.

The spelling of 551373077025 in words is "five hundred fifty-one billion, three hundred seventy-three million, seventy-seven thousand, twenty-five".