265378951 has 2 divisors, whose sum is σ = 265378952. Its totient is φ = 265378950.

The previous prime is 265378931. The next prime is 265378961. The reversal of 265378951 is 159873562.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265378951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265378931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132689475 + 132689476.

It is an arithmetic number, because the mean of its divisors is an integer number (132689476).

Almost surely, 2^265378951 is an apocalyptic number.

265378951 is a deficient number, since it is larger than the sum of its proper divisors (1).

265378951 is an equidigital number, since it uses as much as digits as its factorization.

265378951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 46.

The square root of 265378951 is about 16290.4558254212. The cubic root of 265378951 is about 642.6218543830.

The spelling of 265378951 in words is "two hundred sixty-five million, three hundred seventy-eight thousand, nine hundred fifty-one".