25496729 has 2 divisors, whose sum is σ = 25496730. Its totient is φ = 25496728.

The previous prime is 25496633. The next prime is 25496747. The reversal of 25496729 is 92769452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23088025 + 2408704 = 4805^2 + 1552^2 .

It is a cyclic number.

It is not a de Polignac number, because 25496729 - 2⁸ = 25496473 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 25496729.

It is not a weakly prime, because it can be changed into another prime (25496749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12748364 + 12748365.

It is an arithmetic number, because the mean of its divisors is an integer number (12748365).

Almost surely, 2^25496729 is an apocalyptic number.

It is an amenable number.

25496729 is a deficient number, since it is larger than the sum of its proper divisors (1).

25496729 is an equidigital number, since it uses as much as digits as its factorization.

25496729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 25496729 is about 5049.4285815328. The cubic root of 25496729 is about 294.3256799404.

The spelling of 25496729 in words is "twenty-five million, four hundred ninety-six thousand, seven hundred twenty-nine".