1295418251 has 2 divisors, whose sum is σ = 1295418252. Its totient is φ = 1295418250.

The previous prime is 1295418199. The next prime is 1295418269. The reversal of 1295418251 is 1528145921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1295418251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1295418151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647709125 + 647709126.

It is an arithmetic number, because the mean of its divisors is an integer number (647709126).

Almost surely, 2^1295418251 is an apocalyptic number.

1295418251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295418251 is an equidigital number, since it uses as much as digits as its factorization.

1295418251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 38.

The square root of 1295418251 is about 35991.9192458530. The cubic root of 1295418251 is about 1090.1091973198.

The spelling of 1295418251 in words is "one billion, two hundred ninety-five million, four hundred eighteen thousand, two hundred fifty-one".