25015261 has 2 divisors, whose sum is σ = 25015262. Its totient is φ = 25015260.

The previous prime is 25015231. The next prime is 25015337. The reversal of 25015261 is 16251052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17589636 + 7425625 = 4194^2 + 2725^2 .

It is a cyclic number.

It is not a de Polignac number, because 25015261 - 2⁹ = 25014749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25015201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12507630 + 12507631.

It is an arithmetic number, because the mean of its divisors is an integer number (12507631).

Almost surely, 2^25015261 is an apocalyptic number.

It is an amenable number.

25015261 is a deficient number, since it is larger than the sum of its proper divisors (1).

25015261 is an equidigital number, since it uses as much as digits as its factorization.

25015261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 25015261 is about 5001.5258671729. The cubic root of 25015261 is about 292.4612596317.

The spelling of 25015261 in words is "twenty-five million, fifteen thousand, two hundred sixty-one".