291140343225 has 240 divisors, whose sum is σ = 575990356480. Its totient is φ = 145118822400.

The previous prime is 291140343203. The next prime is 291140343271. The reversal of 291140343225 is 522343041192.

291140343225 is a `hidden beast` number, since 2 + 91 + 1 + 4 + 0 + 343 + 225 = 666.

It is not a de Polignac number, because 291140343225 - 2⁷ = 291140343097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 291140343225.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 378595641 + ... + 378596409.

Almost surely, 2^291140343225 is an apocalyptic number.

291140343225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

291140343225 is a deficient number, since it is larger than the sum of its proper divisors (284850013255).

291140343225 is a wasteful number, since it uses less digits than its factorization.

291140343225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 291140343225 in words is "two hundred ninety-one billion, one hundred forty million, three hundred forty-three thousand, two hundred twenty-five".