25051729 has 2 divisors, whose sum is σ = 25051730. Its totient is φ = 25051728.

The previous prime is 25051723. The next prime is 25051739. The reversal of 25051729 is 92715052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19784704 + 5267025 = 4448^2 + 2295^2 .

It is a cyclic number.

It is not a de Polignac number, because 25051729 - 2¹¹ = 25049681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25051729.

It is not a weakly prime, because it can be changed into another prime (25051723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12525864 + 12525865.

It is an arithmetic number, because the mean of its divisors is an integer number (12525865).

Almost surely, 2^25051729 is an apocalyptic number.

It is an amenable number.

25051729 is a deficient number, since it is larger than the sum of its proper divisors (1).

25051729 is an equidigital number, since it uses as much as digits as its factorization.

25051729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 25051729 is about 5005.1702268754. The cubic root of 25051729 is about 292.6033102329.

The spelling of 25051729 in words is "twenty-five million, fifty-one thousand, seven hundred twenty-nine".