774230625 has 135 divisors (see below), whose sum is σ = 1656878223. Its totient is φ = 347256000.

The previous prime is 774230579. The next prime is 774230629. The reversal of 774230625 is 526032477.

It is a happy number.

The square root of 774230625 is 27825.

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

774230625 is a `hidden beast` number, since 7 + 7 + 4 + 23 + 0 + 625 = 666.

It can be written as a sum of positive squares in 7 ways, for example, as 429608529 + 344622096 = 20727^2 + 18564^2 .

It is not a de Polignac number, because 774230625 - 2⁹ = 774230113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 774230625.

It is not an unprimeable number, because it can be changed into a prime (774230629) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 14608099 + ... + 14608151.

Almost surely, 2^774230625 is an apocalyptic number.

774230625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

774230625 is the 27825-th square number.

774230625 is the 13913-rd centered octagonal number.

It is an amenable number.

774230625 is an abundant number, since it is smaller than the sum of its proper divisors (882647598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

774230625 is an equidigital number, since it uses as much as digits as its factorization.

774230625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The cubic root of 774230625 is about 918.2412148958.

Multiplying 774230625 by its sum of digits (36), we get a square (27872302500 = 166950²).

The spelling of 774230625 in words is "seven hundred seventy-four million, two hundred thirty thousand, six hundred twenty-five".