772500251 has 2 divisors, whose sum is σ = 772500252. Its totient is φ = 772500250.

The previous prime is 772500227. The next prime is 772500257. The reversal of 772500251 is 152005277.

It is a strong prime.

It is an emirp because it is prime and its reverse (152005277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 772500251 - 2¹⁴ = 772483867 is a prime.

It is not a weakly prime, because it can be changed into another prime (772500257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386250125 + 386250126.

It is an arithmetic number, because the mean of its divisors is an integer number (386250126).

Almost surely, 2^772500251 is an apocalyptic number.

772500251 is a deficient number, since it is larger than the sum of its proper divisors (1).

772500251 is an equidigital number, since it uses as much as digits as its factorization.

772500251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 772500251 is about 27793.8887347561. Note that the first 3 decimals coincide. The cubic root of 772500251 is about 917.5566273607.

The spelling of 772500251 in words is "seven hundred seventy-two million, five hundred thousand, two hundred fifty-one".