25787701 has 2 divisors, whose sum is σ = 25787702. Its totient is φ = 25787700.

The previous prime is 25787683. The next prime is 25787717. The reversal of 25787701 is 10778752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16208676 + 9579025 = 4026^2 + 3095^2 .

It is a cyclic number.

It is not a de Polignac number, because 25787701 - 2¹⁵ = 25754933 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25787501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12893850 + 12893851.

It is an arithmetic number, because the mean of its divisors is an integer number (12893851).

Almost surely, 2^25787701 is an apocalyptic number.

It is an amenable number.

25787701 is a deficient number, since it is larger than the sum of its proper divisors (1).

25787701 is an equidigital number, since it uses as much as digits as its factorization.

25787701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27440, while the sum is 37.

The square root of 25787701 is about 5078.1592137309. The cubic root of 25787701 is about 295.4410753221.

The spelling of 25787701 in words is "twenty-five million, seven hundred eighty-seven thousand, seven hundred one".