25632479 has 2 divisors, whose sum is σ = 25632480. Its totient is φ = 25632478.

The previous prime is 25632473. The next prime is 25632493. The reversal of 25632479 is 97423652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25632479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25632473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12816239 + 12816240.

It is an arithmetic number, because the mean of its divisors is an integer number (12816240).

Almost surely, 2^25632479 is an apocalyptic number.

25632479 is a deficient number, since it is larger than the sum of its proper divisors (1).

25632479 is an equidigital number, since it uses as much as digits as its factorization.

25632479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 25632479 is about 5062.8528519008. The cubic root of 25632479 is about 294.8471064461.

The spelling of 25632479 in words is "twenty-five million, six hundred thirty-two thousand, four hundred seventy-nine".