291141025 has 24 divisors (see below), whose sum is σ = 413507264. Its totient is φ = 199195200.

The previous prime is 291141013. The next prime is 291141043. The reversal of 291141025 is 520141192.

It is a happy number.

It is not a de Polignac number, because 291141025 - 2¹⁹ = 290616737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89935 + ... + 93115.

Almost surely, 2^291141025 is an apocalyptic number.

291141025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

291141025 is a deficient number, since it is larger than the sum of its proper divisors (122366239).

291141025 is a wasteful number, since it uses less digits than its factorization.

291141025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721 (or 3716 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 291141025 is about 17062.8551245095. The cubic root of 291141025 is about 662.7775696988. Note that the first 3 decimals are identical.

The spelling of 291141025 in words is "two hundred ninety-one million, one hundred forty-one thousand, twenty-five".