291041625 has 96 divisors (see below), whose sum is σ = 577055232. Its totient is φ = 129830400.

The previous prime is 291041617. The next prime is 291041627. The reversal of 291041625 is 526140192.

It is not a de Polignac number, because 291041625 - 2³ = 291041617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 291041592 and 291041601.

It is not an unprimeable number, because it can be changed into a prime (291041627) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 863457 + ... + 863793.

It is an arithmetic number, because the mean of its divisors is an integer number (6010992).

Almost surely, 2^291041625 is an apocalyptic number.

291041625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

291041625 is a deficient number, since it is larger than the sum of its proper divisors (286013607).

291041625 is a wasteful number, since it uses less digits than its factorization.

291041625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 291041625 is about 17059.9421159628. The cubic root of 291041625 is about 662.7021336458.

The spelling of 291041625 in words is "two hundred ninety-one million, forty-one thousand, six hundred twenty-five".