7800406253 has 2 divisors, whose sum is σ = 7800406254. Its totient is φ = 7800406252.

The previous prime is 7800406249. The next prime is 7800406297. The reversal of 7800406253 is 3526040087.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5425500964 + 2374905289 = 73658^2 + 48733^2 .

It is a cyclic number.

It is not a de Polignac number, because 7800406253 - 2² = 7800406249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7800406213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3900203126 + 3900203127.

It is an arithmetic number, because the mean of its divisors is an integer number (3900203127).

Almost surely, 2^7800406253 is an apocalyptic number.

It is an amenable number.

7800406253 is a deficient number, since it is larger than the sum of its proper divisors (1).

7800406253 is an equidigital number, since it uses as much as digits as its factorization.

7800406253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 7800406253 is about 88319.9085880415. The cubic root of 7800406253 is about 1983.2269127623.

The spelling of 7800406253 in words is "seven billion, eight hundred million, four hundred six thousand, two hundred fifty-three".