274640625 has 140 divisors (see below), whose sum is σ = 604992256. Its totient is φ = 121500000.

The previous prime is 274640581. The next prime is 274640633. The reversal of 274640625 is 526046472.

274640625 is a `hidden beast` number, since 2 + 7 + 4 + 640 + 6 + 2 + 5 = 666.

It is not a de Polignac number, because 274640625 - 2¹¹ = 274638577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 274640625.

It is an unprimeable number.

It is a polite number, since it can be written in 139 ways as a sum of consecutive naturals, for example, 8859360 + ... + 8859390.

Almost surely, 2^274640625 is an apocalyptic number.

274640625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

274640625 is an abundant number, since it is smaller than the sum of its proper divisors (330351631).

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

274640625 is an frugal number, since it uses more digits than its factorization.

274640625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 274640625 is about 16572.2848454883. The cubic root of 274640625 is about 650.0123271824.

The spelling of 274640625 in words is "two hundred seventy-four million, six hundred forty thousand, six hundred twenty-five".