25413491 has 2 divisors, whose sum is σ = 25413492. Its totient is φ = 25413490.

The previous prime is 25413461. The next prime is 25413503. The reversal of 25413491 is 19431452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25413491 is a prime.

It is not a weakly prime, because it can be changed into another prime (25413461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12706745 + 12706746.

It is an arithmetic number, because the mean of its divisors is an integer number (12706746).

Almost surely, 2^25413491 is an apocalyptic number.

25413491 is a deficient number, since it is larger than the sum of its proper divisors (1).

25413491 is an equidigital number, since it uses as much as digits as its factorization.

25413491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 25413491 is about 5041.1795246748. The cubic root of 25413491 is about 294.0050402517.

The spelling of 25413491 in words is "twenty-five million, four hundred thirteen thousand, four hundred ninety-one".