75625391 has 2 divisors, whose sum is σ = 75625392. Its totient is φ = 75625390.

The previous prime is 75625369. The next prime is 75625409. The reversal of 75625391 is 19352657.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75625391 - 2¹⁸ = 75363247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75625331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37812695 + 37812696.

It is an arithmetic number, because the mean of its divisors is an integer number (37812696).

Almost surely, 2^75625391 is an apocalyptic number.

75625391 is a deficient number, since it is larger than the sum of its proper divisors (1).

75625391 is an equidigital number, since it uses as much as digits as its factorization.

75625391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 38.

The square root of 75625391 is about 8696.2860463534. The cubic root of 75625391 is about 422.8852567104.

The spelling of 75625391 in words is "seventy-five million, six hundred twenty-five thousand, three hundred ninety-one".