25464641 has 2 divisors, whose sum is σ = 25464642. Its totient is φ = 25464640.

The previous prime is 25464619. The next prime is 25464653. The reversal of 25464641 is 14646452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24601600 + 863041 = 4960^2 + 929^2 .

It is a cyclic number.

It is not a de Polignac number, because 25464641 - 2¹⁴ = 25448257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25464598 and 25464607.

It is not a weakly prime, because it can be changed into another prime (25464941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12732320 + 12732321.

It is an arithmetic number, because the mean of its divisors is an integer number (12732321).

Almost surely, 2^25464641 is an apocalyptic number.

It is an amenable number.

25464641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25464641 is an equidigital number, since it uses as much as digits as its factorization.

25464641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 32.

The square root of 25464641 is about 5046.2501919742. The cubic root of 25464641 is about 294.2021570743.

The spelling of 25464641 in words is "twenty-five million, four hundred sixty-four thousand, six hundred forty-one".