25415479 has 2 divisors, whose sum is σ = 25415480. Its totient is φ = 25415478.

The previous prime is 25415447. The next prime is 25415491. The reversal of 25415479 is 97451452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25415479 - 2⁵ = 25415447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25415419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12707739 + 12707740.

It is an arithmetic number, because the mean of its divisors is an integer number (12707740).

Almost surely, 2^25415479 is an apocalyptic number.

25415479 is a deficient number, since it is larger than the sum of its proper divisors (1).

25415479 is an equidigital number, since it uses as much as digits as its factorization.

25415479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 25415479 is about 5041.3766968954. The cubic root of 25415479 is about 294.0127063477.

The spelling of 25415479 in words is "twenty-five million, four hundred fifteen thousand, four hundred seventy-nine".