7925551 has 2 divisors, whose sum is σ = 7925552. Its totient is φ = 7925550.

The previous prime is 7925543. The next prime is 7925557. The reversal of 7925551 is 1555297.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7925551 - 2³ = 7925543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7925557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3962775 + 3962776.

It is an arithmetic number, because the mean of its divisors is an integer number (3962776).

Almost surely, 2^7925551 is an apocalyptic number.

7925551 is a deficient number, since it is larger than the sum of its proper divisors (1).

7925551 is an equidigital number, since it uses as much as digits as its factorization.

7925551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15750, while the sum is 34.

The square root of 7925551 is about 2815.2355141267. The cubic root of 7925551 is about 199.3776571220.

The spelling of 7925551 in words is "seven million, nine hundred twenty-five thousand, five hundred fifty-one".