25345961 has 2 divisors, whose sum is σ = 25345962. Its totient is φ = 25345960.

The previous prime is 25345939. The next prime is 25345967. The reversal of 25345961 is 16954352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25050025 + 295936 = 5005^2 + 544^2 .

It is a cyclic number.

It is not a de Polignac number, because 25345961 - 2¹⁰ = 25344937 is a prime.

It is not a weakly prime, because it can be changed into another prime (25345967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12672980 + 12672981.

It is an arithmetic number, because the mean of its divisors is an integer number (12672981).

Almost surely, 2^25345961 is an apocalyptic number.

It is an amenable number.

25345961 is a deficient number, since it is larger than the sum of its proper divisors (1).

25345961 is an equidigital number, since it uses as much as digits as its factorization.

25345961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 25345961 is about 5034.4772320470. The cubic root of 25345961 is about 293.7443942796.

The spelling of 25345961 in words is "twenty-five million, three hundred forty-five thousand, nine hundred sixty-one".