25457963 has 2 divisors, whose sum is σ = 25457964. Its totient is φ = 25457962.

The previous prime is 25457933. The next prime is 25457977. The reversal of 25457963 is 36975452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25457963 - 2⁶ = 25457899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25457963.

It is not a weakly prime, because it can be changed into another prime (25457933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12728981 + 12728982.

It is an arithmetic number, because the mean of its divisors is an integer number (12728982).

Almost surely, 2^25457963 is an apocalyptic number.

25457963 is a deficient number, since it is larger than the sum of its proper divisors (1).

25457963 is an equidigital number, since it uses as much as digits as its factorization.

25457963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 41.

The square root of 25457963 is about 5045.5884691481. The cubic root of 25457963 is about 294.1764370471.

The spelling of 25457963 in words is "twenty-five million, four hundred fifty-seven thousand, nine hundred sixty-three".