25402333953961 has 2 divisors, whose sum is σ = 25402333953962. Its totient is φ = 25402333953960.

The previous prime is 25402333953929. The next prime is 25402333953991. The reversal of 25402333953961 is 16935933320452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24019369713936 + 1382964240025 = 4900956^2 + 1175995^2 .

It is a cyclic number.

It is not a de Polignac number, because 25402333953961 - 2⁵ = 25402333953929 is a prime.

It is not a weakly prime, because it can be changed into another prime (25402333953991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12701166976980 + 12701166976981.

It is an arithmetic number, because the mean of its divisors is an integer number (12701166976981).

Almost surely, 2^{25402333953961} is an apocalyptic number.

It is an amenable number.

25402333953961 is a deficient number, since it is larger than the sum of its proper divisors (1).

25402333953961 is an equidigital number, since it uses as much as digits as its factorization.

25402333953961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15746400, while the sum is 55.

The spelling of 25402333953961 in words is "twenty-five trillion, four hundred two billion, three hundred thirty-three million, nine hundred fifty-three thousand, nine hundred sixty-one".